The cats stay outdoors and we bring it in most nights now, except if we forget.
I'll use my 338 Win. Mag. for bears. Actually there are no bears around here, plenty of coyotes and white tail Deer though.
If the R/C vehicle scares them off, that's great. If an airsoft gun does the trick, that's great too. Skunks don't seem to scare off, they seem to have an attitude that nothing will mess with them because of the stink they can make. I don't mind them being in the area but I don't want to be afraid to walk out the door because they have taken over the place.
An R/C vehicle chasing them everytime they come around might do the trick, once they've been chased they might be scared to come around at the sight of the vehicle.
After your posts on 9mm 900fps airguns I didn't know you were opposed to doing harm to varmints. There have been reports of people being attacked and bitten by skunks around here, when they get in my carport that's too close for comfort.
RogerN