Q & A

There is not a straight forward answer to your question because I would need a bit more information about your colony and the process you used to find the one might. What method of detection did you use (alcohol wash or washer fluid wash, isual inspection of bees, sugar roll, CO2, etc.)? What population of bees did you use (1/2 cup = 300 bees)?

Although there are varying recommendation, the Bee Informed Partnership cites keepoingmite levels below the following 1 mite/100 bees in spring and 3 mites/100 bees in the fall. (See https://beeinformed.org/2018/09/26/the-signs-of-mite-damage-how-to-identify-progressed-varroosis/#:~:text=Because%20of%20this%2C%20I%20recommend,beekeepers%20risk%20high%20colony%20losses.&text=Beekeepers%20must%20consistently%20monitor%20mites,have%20strong%20and%20healthy%20colonies.) for the source.)

You may also want to consider treating all hives in an apiary if even one falls outside the limits. This is mainly due to the fact that Honey Bees can drift from one hive to another bringing with them mites and other diseases.