We had a problem with flying squirrels invading our kitchen at an Anglican (Episcopalian) kid's camp quite a number of years ago,. I tried to reduce their numbers in the 'Chuckwagon' (dining hall) using my sinew backed horse bow and broad head arrows, but had no success at all. The rafters to this day are punctuated with a nice collection of arrows! That speaks volumes for the squirrels' agility in contest with a several times Canadian 3D champion!