I hate to be alarmist. But, beekeepers who have not treated for mites, are running out of time.
Right now the hives are starting to make winter bees. Winter bees will be the bees that live through the winter. Winter bees will be in the hive from early September until March.
For hive survival, the bees need to be as mite free as possible. Having your winter bees heavily parisitized by mites will decrease the odds of winter survival.
Mites can be a vector for viruses into the bees. This can lead to a colony dying in late February or March.
Taking the time now to treat for mites is the best solution.
There are some beekeepers who let their bees die every year and get new packages of bees. This works for them. But, they too have to treat for mites. Beekeepers who do this and do not treat for mites are a big problem for the beekeepers that winter their bees. Untreated hives can spread mites to other colonies.
This week the weather is perfect for using Formic Pro. If you are trying to get some late season honey, Formic Pro can be on your hive with supers on. Formic Pro is considered an organic treatment. Take the time and treat your bees. The $16.00 you spend today, may save you $120.00 in the spring.
Here again is my video on using Formic Pro: