I used 'mite solution' for the first time last fall. Prior to its use I
had lost 23 of my 30 hives to Varroa mite. Although I had earlier used
Apistan, I did not want to continue using it. I placed the mite solution
in with grease patties in the fall, again this spring. A month ago I
checked for Varroa, both in drone brood and with Apistan with sticky
boards, and found NO Varroa. I don't know why it works, but from my
experience, it does work, and the bees are once again healthy and busy in
our gardens.