For the successful treatment-free beekeepers - Do you see a lot of mites in your colonies? Do you think your bees have a high tolerance to varroa and can coexist with high infestation rates or do you think they have adapted to keep mite populations low?
I am currently practicing IPM. Testing my colonies for mites this week I see a wide range of infestation rates >1% to 10%. While some of the colonies with a high infestation rate were poorer performers, others were some of my best colonies production-wise.