Flying squirrels are not protected animals in most states and may be trapped or destroyed if they become nuisances. However, the safest method of removal is to contact a qualified professional to take care of the flying squirrel problem. Wildlife control specialists are trained to humanely catch and remove troublesome squirrels from homes and attics.
If you find a flying squirrel in your attic, you're going to find more!
Flying squirrels are communal nesters, so if you find one of them in your home, be prepared to find more hiding somewhere in your house. Critter Control of SW Michigan responded to a call for help with these critters and located this entry point in a dormer gap.