I use Honey Bee Healthy. I use it thinned down with water and have been using it instead of smoke.That is up to this afternoon. I have 2 hives.The first is a package from this spring and did very well. The second is overwintered from last year with a Buckfast queen. The first has a Carniolan queen. The first have was extremely docile,just a little spray. The second came after me like a cloud of locusts. I have been able to work both hives with short sleeved shirt,no veil. But for the second I had to suite up,coverall,veil,etc.
Wether the weather condition made them aggressive,or the old Buckfast queen is ready for replacing,I don.t know.
Cor Van Pelt