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Unabhängige Testergebnisse von Imker Oliver Smith aus Neuseeland

Varroa mite counts in Beehive 198

Date

Day

Time

 

 

Mite count

Collection period (hours)

Mites per hour

11.08.17

Sugar Shake Test – 250ml of bees

60

16.08.2017

 

5.00pm

Fitted collection tray.

Checked hive. Lots DWV. Some sacbrood, half moon & chalkbrood. 7 frames bees

17.08.2017

1

5.30pm

 

 

28

24,5

1,14

Added ultrasonic repeller to Technoset roof. No top feeder

18.08.2017

2

7.30pm

 

 

24

26

0,92

19.08.2017

3

7.30pm

 

 

33

24

1,38

20.08.2017

4

6.00pm

 

 

35

22,5

1,56

21.08.2017

5

5.00pm

 

 

44

23

1,91

22.08.2017

6

5.00pm

 

 

42

24

1,75

Checked hive. Lots DWV but maintaining its bees numbers. Queen laying OK

23.08.2017

7

9.00pm

 

 

81

27

3,00

24.08.2017

8

5.30pm

 

 

67

20,5

3,27

25.08.2017

9

6.00pm

 

 

54

24,5

2,20

Checked hive. Doing OK, 7,5 frames bees.Fed light syrup. Changed Battery

The 2.2A/Hr battery had got down to 9.3v

26.08.2017

10

4.30pm

 

 

62

22,5

2,76

27.08.2017

11

6.00pm

 

 

110

25,5

4,31

28.08.2017

12

6.00pm

 

 

62

24

2,58

29.08.2017

13

6.00pm

 

 

64

24

2,67

30.08.2017

14

9.30pm

 

 

61

27,5

2,22

Noticed repeller not working. Brushed Mineral Oil around edges of tray.

31.08.2017 Checked hive. Repeller had dropped onto frames. Replaced battery.

Bees looking good. The 2.2A/Hr battery had got down to 12.3v

31.08.2017

15

5.30pm

 

 

60

20

3,00

01.09.2017

16

4.30pm

 

 

41

23

1,78

02.09.2017

Repeller had dropped onto the frames. Secured to roof with bracket.

02.09.2017

17

4.00pm

 

 

75

23,5

3,19

03.09.2017

18

5.30pm

 

 

85

25,5

3,33

04.09.2017

19

5.00pm

 

 

67

23,5

2,85

05.09.2017

20

4.3pm

 

 

81

23,5

3,45

06.09.2017

21

10.30pm

Sugar Shake Test – 250m

36

 

06.09.2017

Replaced battery, was down to 12.25v. Fed 3 litres light syrup.

06.09.2017

21

4.30pm

 

 

70

24

2,92

07.09.2017

22

5.30

 

 

121

25

4,84

08.09.2017

23

8.30pm

 

 

126

27

4,67

09.09.2017

24

5.30

 

 

94

21

4,48

10.09.2017

25

6.00pm

 

 

191

24,5

7,80

11.09.2017

Checked hive. Had no sacbrood, half moon & chalkbrood. A few bees

with DWV but most all good. Had a queen cell with an egg. 8 frames bees. Fed.

11.09.2017

26

5.00pm

 

 

134

23

5,83

12.09.2017

27

6.00pm

 

 

142

25

5,68

13.09.2017

28

5.00pm

 

 

98

23

4,26

14.09.2017

29

6.00pm

 

 

158

25

6,32

15.09.2017

30

5.30pm

 

 

101

23,5

4,30

16.09.2017

31

5.30pm

 

 

92

24

3,83

17.09.2017

32

5.30

 

 

77

24

3,21

18.09.2017

33

5.00pm

 

 

152

23,5

6,47

19.09.2017

34

2.30pm

Sugar Shake Test – 250ml

11

 

19.09.2017

34

Changed battery. Was still at 12.2v.

19.09.2017

34

5.30pm

 

 

127

24,5

5,18

20.09.2017

35

8.30pm

 

 

128

27

4,74

21.09.2017

36

5.30pm

 

 

137

21

6,52

22.09.2017

37

4.00pm

 

 

172

22,5

7,64

22.09.2017

37

Check hive. 8.5 frames bees. Lots of Varroa in Drone cells.

23.09.2017

38

6.00pm

 

 

188

26

7,23

23.09.2017

38

Adjust clocks for Daylight Saving time.

24.09.2017

39

6.00pm

 

 

220

23

9,57

25.09.2017

40

4.30pm

 

 

160

22,5

7,11

26.09.2017

41

 

 

 

 

 

 

27.09.2017

42

 

 

 

 

 

 

28.09.2017

43

 

 

 

 

 

 

29.09.2017

44

 

 

 

 

 

 

30.09.2017

45

 

 

 

 

 

 

01.10.2017

46

 

 

 

 

 

 

02.10.2017

47

 

 

 

 

 

 

03.10.2017

48

 

 

 

 

 

 

04.10.2017

49

 

 

 

 

 

 

05.10.2017

50

 

 

 

 

 

 

Bewertung durch Imkermeister Rainer Krüger:

Diese Ergebnisse decken sich auch mit den anderen Testergebnissen

 

3864 Milben gefallen (ohne Milben aus Test) 107 Milben

Im Zuckertest zu Beginn 60 Milben

Nach 34 Tagen 11 Milben

Ergibt einen Wirkungsgrad von 88,40%

 

Lebende Varroa (alte Milben) in der Brut ist normal, da diese in der Brut in einem geschützten Raum sind.

Wir haben ca. 55 Dezibel Schall in der Zelle, was für die weiße Milbe ausreichend ist.

Sie sterben ab und die Vermehrung ist unterbrochen.

Für die Alt-Varroa reicht dies nicht aus. Die Alt-Varroa benötigt min. 80 Dezibel Schalldruck.

Dann stirbt sie nach 5-10 Tagen.

Da die Alt-Milbe 3-4mal (selten 5mals) immer wieder in eine neue Zelle kann, muss das Varroa-Sound-Gerät 40-45 Tage auf dem Volk verbleiben. Das ergibt einen Wirkungsgrad von ca. 85-95%, je nach Bienendichte.

Bei zu viel Restmilben, das Varroa-Sound-Gerät ein zweites mal aufbringen.

Das erhöht den gesamten Wirkungsgrad auf ca. 95%.

 

Mit freundlichen Grüßen

Imkermeister Rainer Krüger

 

Review by beekeeper Rainer Krüger:

These results are also consistent with the other test results

 

3864 mites fallen (without mites from the test) 107 mites

In the sugar Test at the beginning 60 mites

After 34 days 11 mites

Given an efficiency of 88.40%

 

Living Varroa (old mites) in the brood is normal as there are present in the brood in one protected space.

We have about 55 decibels sound in the cell, which is sufficient for the white mite.

These die and multiplication is interrupted.

This is not enough for the Old-Varroa. The Old-Varroa needs min. 80 decibels sound pressure. Then it dies after 5-10 days.

Since the old mite can 3-4 times (rarely 5 times) again and again into a new cell, that must Varroa-Sound-Device 40-45 days remain on the hive. This results in an efficiency of about 85-95% depending on the density of the bee.

In the residual mites are too much, apply the Varroa-Sound-Device a second time.

This increases the overall efficiency to approx. 95%.

 

Best regards

Beekeeper Rainer Krüger

 


 

Test results

 

I run a large beekeeping operation with around 1,000 hives in Sardinia and Germany, and have conceived the general concept of influencing the natural frequency of bodies with high-frequency sound. In April 2014 we started to investigate the frequency to which bees and mites respond. To do that, I had to identify the sound frequencies of bees and mites. The treatment does not harm bees at all: neither the brood and queen nor bee behaviour are affected.

 

We placed bees in a viewing box and exposed them to various frequencies. Staff sat in front of this box and ran through all the frequencies, observing the behaviour of bees and varroa mites. In our investigation we found that bees responded at 2,000 to 8,000 hertz. Bees do not respond to frequencies above 9,000 hertz at all. Mites react at 12,000 to 17,000 hertz. The ideal frequency is 14,000 to 15,000 hertz. We also found that wave form is critical. A square wave is much more effective than a sinus wave. We need a sound frequency of at least 35-40 decibels within the brood. At that level the juvenile mites (white mites) die within 2 days (reproduction is interrupted). Old mites (adults) need at least 80 decibels, then they die within 2-8 days. This means that even when the adult mites are in the brood they are in a protected space, and so all aspects of treatment, especially the time of application, need to be taken into consideration.

 

The device is placed directly on top of the combs. An empty frame and then the lid are placed on top of the device. In practice, the treatment is carried out at least twice a year. Because of reinfection, all the hives in the apiary need to be treated at the same time. The ideal time is when there are no more than two frames in the hive, so that the sound pressure reaches the bottom frame as well. In winter, efficacy is around 95% or more, and around 90% from February to April and from July to October, from a single treatment. The device can also be used in the case of severe varroa infestation in summer when the honey chambers are also in the hives, because ultrasound does not harm the honey. However, under these conditions the efficiency is only around 70%, because the decibel output falls the further the device is from the lowest brood frame. In this situation we recommend re-applying the sound device again immediately (after recharging the battery). That raises the overall efficacy rate to +/- 95%. It is also important that all the hives in the apiary are treated at the same time, so each hive needs its own device. Beekeepers with several apiaries can use one device for two apiaries.

 

The device is fitted with a rechargeable dry battery. One battery charge is enough for the total treatment duration of 40 days.

 

In October 2016, all the test series and sample tests had been completed, our Varroa-Killer-Sound was ready for mass production and I had applied for a patent. Starting in November/December 2016 tests of the Varroa-Killer-Sound were carried out independently by myself, a large-scale beekeeper, H. J. Morhart from Bad Hindelang, and the senior health officer Mr. Dörler from Vorarlberg. The tests were carried out over the winter (December/January). The results were identical in all groups. The bees remained in their winter cluster underneath the sound device. They were perfectly calm and did not consume more feed than normal or move to another location.

 

Results obtained by Mr. Dörler, Vorarlberg senior health officer:

 

Varroa mite infestation rates

Treatment with Varroa Killer-Sound

Day

 

Hive 1

 

Hive 2

 

Hive 3

 

Hive 4

 

Hive 5

 

Hive 6

 

Hive 7

 

Hive 8

 

Hive 9

 

Hive 10

-1

0

0

0

0

0

0

2

0

1

0

-2

0

1

1

0

0

0

0

1

0

1

-3

0

0

0

0

0

0

0

0

0

0

1st total

1

0

0

1

1

1

1

0

0

0

0

0

2

1

1

1

1

0

0

0

0

2

1

2

0

0

0

1

0

0

2

0

3

0

1

0

0

0

0

1

1

3

0

4

0

0

0

0

0

0

0

1

0

1

5

0

0

0

0

0

0

1

3

0

0

6

0

0

0

0

0

0

0

2

2

0

7

0

1

0

0

0

0

0

3

1

0

8

0

1

1

0

0

1

1

0

0

0

9

0

0

0

0

0

0

1

1

2

0

10

0

0

5

0

6

1

2

2

3

2

11

0

0

0

0

0

0

0

0

0

1

12

0

0

0

0

0

0

0

2

0

0

13

0

0

0

0

0

0

0

0

0

1

14

0

0

2

0

0

1

1

0

0

0

15

0

0

2

0

2

0

1

0

1

0

16

0

2

0

0

0

0

0

0

0

0

17

0

0

0

0

0

0

1

0

0

0

18

0

0

0

0

2

0

3

0

0

0

19

0

0

0

0

0

1

0

1

0

0

20

0

0

0

0

0

0

2

1

0

0

21

0

0

2

0

0

0

1

0

1

0

22

0

0

2

0

0

0

0

0

0

0

23

0

0

1

0

1

0

0

0

0

0

24

0

1

0

0

0

0

0

0

0

0

25

0

0

1

0

0

0

1

0

0

0

2nd total

1

9

17

0

0

12

5

16

17

15

5

26

0

0

0

0

0

0

0

0

0

27

0

0

0

0

1

0

0

1

0

0

28

0

1

0

0

0

0

0

0

0

0

29

0

0

0

0

0

0

0

1

0

0

30

0

0

0

0

0

0

1

5

0

0

Total 0 1 0 0 1 0 1 7 0 0

 

 

Mr. Dörler stated that just beforehand he had conducted a very good winter mite elimination in his hives and was surprised to find so many mites despite this. He thought that he had no or very few mites. The results for hive 8 are particularly interesting. He was very satisfied with the result, and had not noticed anything unusual about the hives.

 

 

 

Results obtained by Mr. H.J. Morhart, large-scale beekeeper from Bad Hindelang:

 

Day

 

Hive 1

 

Hive 2

 

Hive 3

 

Hive 4

 

Hive 5

 

Hive 6

 

Hive 7

 

Hive 8

 

Hive 9

 

 

Hive 10

23.12.

1

2

3

4

8

9

11

12

17

18

24.12.

2

3

1

4

9

8

4

3

 

0

1

26.12.

4

3

2

5

6

5

5

5

 

2

2

27.12.

2

1

3

4

9

3

8

3

 

3

4

29.12.

0

1

1

4

5

1

2

2

 

2

2

30.12.

2

0

0

6

7

2

4

3

 

4

3

01.01.

1

1

2

5

13

3

11

4

 

2

1

04.01.

0

2

2

4

8

2

6

4

 

3

3

07.01.

1

0

1

4

7

1

5

3

 

2

3

10.01.

0

1

2

3

3

1

3

3

 

1

3

12.01.

0

0

1

4

1

0

1

3

 

2

1

15.01.

0

0

0

0

0

0

0

1

 

0

1

16.01.

0

0

0

0

0

0

0

0

 

0

0

20.01.

0

0

0

1

2

0

0

1

 

0

0

Total

13

14

18

48

78

35

60

47

38

42

 

 

Oxalic acid applied on 20.01.2017 to eliminate remaining mites. Mite numbers decreased after a total of 4 days.

 

Natural overall decrease in mit numbers within 5 days before treatment of the same hives.

 

Mites

 

1

Hive no.

 

1

1

2

2

3

2

4

2

5

2

6

3

7

2

8

3

9

1

10

 

This shows that mite elimination in winter is very effective. In addition, the hives did not produce any more broods, and so the mites were unable to hide there. The bees remained perfectly calm underneath the sound devic.

On 01.04.2017 we set up 164 Varroa-Killer-Sound devices in Sardinia. Before setting up the devices we tested the hives with the icing sugar method, which is not very accurate but does demonstrate efficacy. The hives had an average of 5-7 mites per sample.

 

On removal on 28/29 April, the hives were tested again 122 samples with 0 mites 42 samples with 1 -2 mites

 

Baseline figures on 01.04.2017

 

Average bee weight approx. 2 kg bees per hive: 50 gr. Sample = 40 x avg. 6 mites = 240 mites

240 mites + 20% margin of error = 288 mites – start (with no mites in the brood)

 

 

Figure on 29 April 2017 – only samples with mites

 

Average bee weight approx. 2 kg bees per hive: 50 gr. sample = 40 x avg. 1.5 mites = 60 mites

+ 20% margin of error = 72 mites – end

288 = 100% residual mites = 75% efficacy rate

 

When applied twice: 216 mites (first run = 75% efficacy rate) + 54 mites (second run = 75% efficacy rate)

 

 

Total: 270 mites Residue approx. 18 mites = 270: 2.88 = approx. 94% efficacy rate. Sample of all hives together:

Average bee weight approx. 2 kg. bees per hive

50 g sample = 40 x avg. 0.3 mites = 12 mites

+ 20% margin of error = 14.5 mites – end

288 = 100% residual mites = 95% efficacy rate when applied once

 

 

It must also be borne in mind that approximately 50% of the bees in our apiary are foraging bees. Varroa mites stop feeding when exposed to our sound emissions. This weakens them considerably and they lose their grip on bees during honey flow and when the bees are flying. We should assume that many of them are lost because of this, though it is not possible to measure the loss. It is also important to bear in mind that during the treatment period the number of mites in the hive would have doubled each month (without treatment).

 

30 control hives which were not treated and had the same baseline values had between 20 and 25 mites per sample on 29 April 2017.

 

Then 2 series of tests were carried out to determine efficacy:

 

Use of 10 Varroa-Sound devices in Maierhöfen from 23.05.2017 to 01 July 2017 (40 days). Natural daily die-off before treatment: 3-4 mites per day on average.

The hives were heavily engaged in collecting nectar from forests, and had 8 - 10 brood combs. No effect on bee behaviour or the brood was detected. In some cases, the bees placed wax on the sound-emitting devices. This had no impact on efficacy. The hives were using 3 - 4 frames while exposed to sound (1 brood chamber and 2-3 honey chambers). The batteries were replaced on 21.06.2017.

Mites fallen during sound emission:

 

Hive no.

Number of mites falling during sound emission

Number of mites falling in 5 days by oxalic acid after sound emission

Estimated remaining number of mites not falling as a result of oxalic acid

Total mites

Efficacy rate

1

578

304

50

932

62%

2

645

365

50

1060

61%

3

572

270

50

892

64%

4

516

264

50

830

62%

5

659

320

50

1099

60%

6

759

390

50

1029

73%

7

524

255

50

1199

44%

8

622

322

50

999

62%

9

497

264

50

811

61%

10

594

295

50

939

63%

 

 

10 control hives with the same baseline values not exposed to sound emission. The following mite fall figures were observed during oxalic acid treatment:

 

Because of the large number of mites, the figures were counted to within +/- 50 mites.

 

Hive

 

1

Mites

 

1650

2

1550

3

1210

4

1580

5

1450

6

1250

7

1230

8

1350

9

1460

10 1280

 

 

 

Following the test period, control hives which had the same starting conditions were found to have between 1,200 and 1,500 mites per hive at the time of residual mite elimination (plus mites in the brood)

 

 

 

A beekeeper from the Chiemgau region published the following series of tests:

 

Numbers of mites fallen in the 5 days immediately before the use of the Varroa-Sound device were 23 (avg. 4.6 mites/day). Sound emission started on 29 April. Hive size: 1 brood chamber and 2 honey chambers

Effects on bees

No unusual bee behaviour was observed during the test period.

 

Effects on mites

The effects on mites were only observed by means of the “sticky board” method.

Mite fall remained low in the first 3 days, but then rose slowly each day. On day 4 we started to coat the discs with oil, as ants and other creatures were taking material from the debris (which is probably why there were no mites on day 4).

 

 

 

 

 

 

Milbenabfall mit Varroa-Killer-Sound

Mites fallen with Varroa-Killer-Sound

Keine offene Brut, nur noch Verdeckelte

No open broods, now only capped broods

Brutfreiheit

No broods

Soundgerät aufgesetzt. 1 Brutraum, ASG, 2 halbe Honigräume

Sound device in place. 1 brood chamber, queen excluder, 2 half honey chambers

Königin entnommen

Queen removed

3ter HR aufgesetzt (Halbzargen)

3rd honey chamber inserted (half-frames)

Altköniginnen-Ableger

New hive with old queen

2 Tage ohne Sound (Akku nachladen)

2 days without sound (battery recharge)

 

 

During the test

During the 42 days, the loudspeaker frequently fell from the battery and came to rest directly on the top supports. This had no noticeable effect on fall statistics.

On day 11 the old queen was removed and a separate chamber for the old queen was set up. Counts were performed every day on this separate chamber as well until the end of the test, and the results are shown in red in the remainder of the graph. This chamber was not exposed to sound.

An additional half-sized honey chamber was inserted on day 13. The mite count fell dramatically after this! It is clear that additional space significantly reduces the effectiveness of the sound.

On day 20 a young queen emerged but was lost during the mating flight.

The removal of the old queen on day 11 meant that there was no longer any open brood present from day 22 onwards, and the mites could no longer hide from the sound. As a result, the incidences of varroa mites falling rose again sharply.

The sharp decline on days 30/31 was caused by a 2-day interruption of sound emission. During this time the battery was being recharged.

Once the hive was brood-free from day 36 the number of fallen mites dropped significantly, and stood at only 4 mites on day 42. The test was concluded at that point.

 

Over the span of 42 days a total of 616 mites fell from the hive exposed to sound.

 

 

After the test - degree of efficacy

 

A total of 371 mites fell in the 5 days after the oxalic acid treatment.

Even when no brood is present, a single application of oxalic acid is not sufficient to eliminate all mites from the hive. We therefore assumed that at that stage there could still be about 50 mites in the hive.

 

 

This means that the Varroa Sound device has the following efficacy results:

Mites during the sound phase 616

Mites after the test by oxalic acid 371

Estimated residual mite numbers 50

Total mites 1,037

 

Level of efficacy: 616 x 100 / 1,037 59% (around 83% if used twice)

 

 

 

It is true that a simple count is not completely accurate because the mites continued to breed during the long period, but it should be accurate enough for an assessment.

 

 

 

Beekeeper’s conclusion

 

The sound certainly does have a fatal effect on the mites.

Our findings therefore clearly run counter to tests conducted by other beekeepers who found the sound to be ineffective. The effect does exist - but is not sufficiently high (in this test!).

As indicated on the manufacturer's home page, the device becomes much less effective the further away from the brood it is placed (because of honey chambers). This means that it may not be as effective when used while bees are collecting nectar.

 

 

 

 

OVERALL CONCLUSIONS:

 

The ideal time for use was clearly found to be from February to mid-April and from mid-July to October. Between mid-April and mid-July the volume of nectar brought back to the hive and the size of the population meant that efficacy was markedly reduced, but nevertheless still sufficient to reduce the level of mite infestation in the hives. Use during the brood-free period (winter) in November and December is also recommended because of very high efficacy rates.

 

A single use produces a satisfactory effect.

 

Two uses in succession produce a very good effect.

 

This is an alternative form of treatment that has now been proven to be effective.

 

For information: The devices are currently undergoing neutral and independent testing at the Bavarian Regional Institute for Wine Production and Horticulture in Veitshöchheim and at Berlin Technical University’s Bee Research Centre.

 

Results will probably be available and published in August / September 2017.

 

 

 

 

 

Evaluation and assessment of this set of tests

These results are almost identical to the first initial results obtained by the Bee Centre of the Bavarian Regional Institution for Viticulture and Horticulture in Veitshöchheim, which differed in that only one device has been used so far. The final results from Veitshöchheim with 12 devices will not be available until mid-August, we will publish the results once they are sent to us. In general, the effect of the device is regarded as good. When the device is used twice in succession, the efficacy rate is around 90%. This can be achieved without difficulty as the device does not harm the bees in any way, and this produces a very good effect. It must also be borne in mind that approximately 50% of the bees in our apiary are foraging bees. Our treatment stops varroa mites from feeding. This weakens them and causes them to lose their hold on bees while they are foraging and flying. It must therefore be assumed that many varroa mites on foraging bees are lost outside the hive. It is difficult to measure the extent of this loss, but it would increase the efficacy rate. The diagram for example shows very clearly that without sound application the rate of varroa mite fall decreased dramatically on days 30-31. This is strong confirmation of the efficacy of Varroa-Killer-Sound. Furthermore, removal of the queen (and allowing the brood to hatch) makes it very easy to calculate the total number of mites in the hive in order to ascertain efficacy. However, in everyday beekeeping this is not necessary. It must also be noted that in hives with 3 or 4 frames, the sound no longer penetrates sufficiently into the lower brood frame, and that in the capped brood we no longer have the necessary sound level of at least 35 decibels which we require for the juvenile mites in the brood. This means that in these 3- or 4-frame hives mites continue to reproduce at quite a high rate. Nevertheless, the overall effect is good. But this also means that hive demiting should ideally be carried out on 1- to 2-frame hives. Another point is that if the hives had not been treated the number of mites would have doubled in each treatment cycle. At the moment, we are using approximately 500 devices in 2 treatment cycles of 30 days each.

We performed a test using the icing sugar methods (which is not very accurate, but which records efficacy) on 164 hives on 1 April before introducing the Varroa-Killer-Sound, and had 5-7 mites per sample. When the devices were removed on 28/29 April, we had 122 samples with no mites, and the other samples contained 1 or 2 mites each in the case of 2-frame hives. This means that the efficacy rate is over 90%. We have strong, healthy hives with few or no mites. Normally in April / May we would be suffering very heavy varroa infestation with a large number of crippled bees and total hive loss even at this early stage. It should be borne in mind that our hives are in Sardinia, and that we have 4-7 brood combs in December and 3-4 brood combs in January, which means that we have very high varroa reproduction. This is no longer the case.

Beekeepers are currently using approximately 10,000 devices with very good results and feedback.

This device is and remains a revolution in the treatment of varroa, and is still the alternative method of varroa control.

Sound measurements with these apps are very inaccurate. The decibel level at a distance of approximately 2 cm is +/- 100 decibels for all devices, but at least 95 decibels.

The ideal treatment time is still February/March to April and from July/August to September/October. Success rates in winter are also very good. At this period, the efficacy rate is approximately 90% per treatment cycle. It is true that the efficacy rate falls with each additional frame that is inserted. This is why 1-2 frames is ideal, although the number of mites killed is higher in hives with more frames.

 

 

With best wishes

Master beekeeper Rainer Krüger

Bienen-Varroa-Sound GmbH

Untersteig 3

D-88167 Maierhöfen

Tel.: +49 (0)8383 9292968

info@varroa-sound.de

www.varroa-sound.de

 


 

01. June 17

Daniel, a beekeeper from Baden-Württemberg, has sent us the following table.

He had to dissolve a bee-colony with a high load of varroa-mites (29.04.). The remote bees have begun to enter the neighboring 
bee-hive (“Volk 5”), which has just been treated with the Varroa-Killer-Sound.  Impressive is the mite-drop 24 days after the hive was 
dissolved (24 - 26.05.)!

Daniels theory: The mites, which entered the hive with the bees of the dissolved hive, penetrated the brood of “Volk 5”. 
There they were eliminated by the Varroa-Killer-Sound ... we agree with him ;-)
Varroafall bei Behandlung mit Killersound
Datum Behandlungstag Volk 1 Volk 2 Volk 3 Volk 4 (leer) Volk 5 Volk 6 Volk 7 Bemerkung
03.04.17 -2 4 0 2          
04.04.17 -1 3 1 3          
05.04.17 0 6 0 0         Killersoundgerät in Volk 1 eingesetzt
06.04.17 1 0 0 4          
07.04.17 2 1 0 0          
08.04.17 3 3 0 1          
09.04.17 4 8 1 2          
10.04.17 5 1 0 0          
11.04.17 6 1 0 0          
12.04.17 7 1 0 1   5 1 0 3 Neue Völker.
Volk 6 wegen drohnenbrütig abgekehrt und gleich Ableger gebildet
13.04.17 8 0 1 0   15 1 0  
14.04.17 9 0 0 1   21 0 0  
15.04.17 10 1 0 0   16 1 0 Gerät in das neue stark belastete Volk 5 umgesetzt
16.04.17 1 1 1 0   11 1 0  
17.04.17 2 0 1 0   12 1 0  
18.04.17 3 1 0 0   13 3 0  
19.04.17 4 2 0 0   9 1 0  
20.04.17 5 0 0 0   16 4 0  
21.04.17 6 1 0 1   24 12 0 Überraschend, dass bei Volk 6 plötzlich so viele fallen.
Bei Volk 7 Weisellosigkeit festgestellt. Brutwabe (ohne Bienen) aus Volk 5-> Volk 2
22.04.17 7 0 0 1   33 1 0 Zwecks Weiselprobe Brutwabe aus Volk 5 - > Volk 7
23.04.17 8 0 0 0   44 6 0  
24.04.17 9 0 0 0   36 14 1  
25.04.17 10 0 0 4   22 8 0  
26.04.17 11 0 1 1   18 16 0  
27.04.17 12 2 2 0   28 2 1  
28.04.17 13 0 3 1   40 8 0  
29.04.17 14 1 0 1   33   0 Volk 6 war immernoch weisellos und relativ stark Varroabelastet, Volk aufgelöst!
Volk 6 stand unmittelbar neben Volk 5, viele Bienen in Volk 5 eigebettelt, Reinfektion!!!
30.04.17 15 1 1 0,5   25   0 Heute keine Milben gezählt
01.05.17 16 1(2) 1(2) 0,5(1)   25(50)   0(0) Weil gestern nicht gezählt wurde, wird ein rechnerischer Mittelwert angenommen.
In Klammern ist der tatsächlich gezählte Wert
02.05.17 17 2 1 0   24   0  
03.05.17 18 1 0 0   38   0  
04.05.17 19 2 2 0   32   0  
05.05.17 20 0 3 0   30   0  
06.05.17 21 1 0 0   25   0  
07.05.17 22 1   0,5   16   1 Heute keine Milben gezählt
07.05.17 23 (1)2 0 0,5(1)   16(32)   1(2) Weil gestern nicht gezählt wurde, wird ein rechnerischer Mittelwert angenommen.
In Klammern ist der tatsächlich gezählte Wert
07.05.17 24 0 1 2   30   0  
07.05.17 25 0 0 0   54   1  
11.05.17 26 0 1 0   25   1  
12.05.17 27               Urlaub
13.05.17 28                
14.06.17 29                
15.05.17 30                
16.05.17 31                
17.05.17 32                
18.05.17 33                
19.05.17 34                
20.05.17 35               Urlaub Zurück. Varroabrett neu
21.05.17 36 1 0 0   8   0  
22.05.17 37 0 1 0   4   0  
23.0517 38 0 0 0   5   0  
24.05.17 39 0 0 0   59   0 Varroa aus aufgelöstem Volk ging in Dronenbrut, diese ist nun geschlüpft, offensichtlich sind Varroen,
Die in Dronenbrut verdeckelt waren gefallen
25.05.17 40 0 3 0   91   0  
26.05.17 41 0 1 2   86   0  
27.05.17 42 0 1 3   14   0  
28.05.17 43 4 1 1   2   1  
                   
                   

09. May 17
 
From 01.04.2017 on in the Allgäuer Wanderimkerei in Sardinia 164 bee-hives were treated with the Varroa-Killer-Sound.
 
A review of the degree of infestation by the powder sugar method (with 50 g of bees) resulted in 116 samples with 6 mites, 25 samples with 5 mites and 23 samples with 7 mites!
 
Result after the removal of the devices on 28./29. April: 122 samples with 0 mites, 38 samples with one mite and 4 samples with 2 mites.
 
Since April 30, there are 150 other units in operation. Hives who still had Varroa-Mites in the sample are treated directly again ...
 

IMG-20170508-WA0037IMG-20170508-WA0039IMG-20170508-WA0040


03/07/17

After the delivery of the Varroa-Killer-Sound devices has begun, we get first feedbacks, which we naturally will not withhold anyone. Here, e.g. from a professional beekeeper from Salzburg, Mr. Kornbichler (contact details on request).

The colonys have come through the winter with very different degrees of varroa-infection, as can be seen in the figures before the beginning of the treatment. Although the devices are only two weeks in the hives, the effect is clearly visible.  

Date Colony1 Colony2 Colony3 Colony4 Colony5 Colony6 Colony7 Colony8 Colony9 Colony10 Colony11 Colony12 Colony13
                           
Mite drop before treatment            
08.02.-12.02. 6 3 5 10 0 0 2 8 1 0 0 0 0
                           
Mite drop during treatment with Varroa-Killer-Sound          
13.02.-18.02. 10 5 10 12 3 4 2 6 5 6 0 3 4
18.02.-24.02. 15 30 30 16 1 2 11 12 4 0 0 2 3

02/28/17

Over the last few weeks, we have been concentrating on bringing the latest improvements to the product.
In the middle of February we were able to start the delivery of the Varroa killer sound.
According to the order we are now very hard working to send the devices.
Of the deliveries in the middle of February (approx. 400 pieces in the Salzburger Land), we already received first positive
feedbacks at the API-Expo in Graz last weekend ...

App


02/05/17

The Indiegogo-Campaign is over and we are glad to be able to send the Varroa-Killer-Units to Supporters from USA, Kanada, New Zealand, the Phillipines and nearly every Country in Europe.

From now on we will show you any progress we make here in the news and naturally on facebook "varroasound".