A natural and non-toxic treatment. Through thousands of treatments efficiacy rates ranged from 85% to 95% with an overall average of 93%. Encourages the hygienic behavior of the honey bee, preventing a number of related problems. Ease of use: 2 x 50 gm treatment trays per hive, with an interval of 14 days, in summer just after the honey flow. Best results occur when bees are active and maximum daily temperatures are between 60 degrees F and 105 degrees F.