od Marc vH dne 15.11.2017
Used this product exclusively in 2 out of 16 hives last season. All other hives were treated with Oxalic and/or MAQs. After treating for the last three weeks of July, mite counts (alcohol wash) in the two hives using VSK were both less than 1%, making them the 4th and 5th lowest of all 16 hives. Follow-on treatments on two other hives (last two weeks of August) brought levels from 2.5% down to 1.5%. Ease of use, no chemicals, no dependence on temperatures, can be used at any time of year - great product.