I am from Ohio and am new to the beekeeping world. I have read that there is an organic product out called Bacillus thuringiensus- Berliner. This product works real well on varroa mites and controls them within 3-5 days.
It is a spore compound that you put on a piece of paper and install into the hive. This product they say is safe for humans.
Has anyone heard of this and if so please let me know. I would like to find a supplier in the United States so I can purchase some for my hives. I am planning on going organic when treating my hives.