I'm approaching my 5th winter with bees. The first two autumns ('08 & '09) I fed thymolated syrup to the few hives that I had and I did a few sugar dustings.
No thymol was used after October '09
I may have done some sugar dusting in 2010 but I'm not certain. I believe I would have, but I overlooked doing them. Comb suspected to contain thymol syrup have been culled out.
2011: No treatments... went into winter with eight colonies and seven made it to spring.
I don't practice any drone management for mites.
Would my colonies be considered treatment free at this point?