I know numerous beekeepers who are treatment free and successful. Sure you lose some, but my “traditional beekeeper“ friends, had between 50-100% die out last winter. We had 100% survival. I can imagine a guy with treated bees, who are descendants from treated bees, who have been propped up like welfare recipients for years… would lose most colonies shortly after shutting off the support of chemical treatments. That makes sense to me. I’ve listened to numerous bee experts, mainly from Europe, where they care more about chemicals in and around their food sources, state that initially losses would be high, but weeding out poor genetics is possible, and advised. We have never done this in the US. We treat 99% of our colonies, and FEED THEM REFINED SUGAR to boot. Then we lament how sickly they are. No. Kidding.
Bees are free… so losing a colony shouldn’t be “expensive” to a small time guy like me. My problem is finding homes for all of them. Bees are being bred for better grooming traits, to be varroa resistant… genetics do exist. Numerous universities have created their own lines of genetics with these traits.
The problem with treating a bug that you cannot eradicate, is that the bugs that survive, are themselves, better adapted to survive… becoming resistant to chemicals used to treat them to begin with.
To each their own… but I also hear the BEST hives are thin walled, vertical boxes that don't emulate the habitat of a bee at all… from the same folks that feed refined sugar and chemicals to their bees. Expensive or not, if I have a weak colony, I don’t want them propogating… I want them to die. I care more about bees, than profit. Bees are being made weak, because we make them weak through our cultural practices.
We over harvest, for profit. Feed refined sugar. Treat weak colonies, for profit. Then we sell “pure honey“ that comes from bees who spent the winter and half the summer eating Costco sugar by the sack.
There is a very successful treatment free beekeeper in NY who had a great YT channel… but he was forced to shut it down when NY made it ILLEGAL to keep bees without treating them with chemicals. The state actually has the right to come destroy every hive.