Hello I am Keith McDonald, nick name Killer Keith and hunting my whole life, 45-50 years, deer hunting, bear hunting, moose hunting, turkey hunting, you name it, I have hunted it. I am a licensed Maine guide. I've hunted in Alaska. I've hunted in Canada. I've hunted in Newfoundland. I've been everywhere, everywhere I've hunted. People do use bb guns some, pellet guns probably more than bb guns 'cause bb guns aren't quite powerful enough, in general. But a pellet gun, they'll use em for squirrels. If squirrels get to be a problem like i've had here, they get in the attic and nest, and start chewing the insulation out. Chewing on the wires and everything else. So, we take care of em with the little squirrel gun here, and i take care of em that way with a 22. Some people that have neighbors real close by can't us a rifle or a handgun. So they have to go to a pellet gun. Usually though, bb guns no. It would be a pellet gun, which is more powerful than a bb gun. More accurate.