To foreign viewers raccoons are wonderfully inquisitive and cute critters. To folks that discover them raising a litter of young uns through a hole they made in the roof, or 'animal-proof' garbage cans constantly being up-ended and scattered about, they are a serious nuisance.
22 CB longs are quiet and allow you to keep your distance and a raccoon that has been 'ventilated' with one does not come back nor does it get word out to any of it's colleagues. Raccoons are not an endangered species, if anything there are many more per acre in urban settings (no effective predators except for traffic) than there are in the wild.
You could, if you have a twisted sense of humour do like I do in Provincial Parks on camping trips where bold raccoons are a real pest, feed the intruder a bowl of food steeped with Ex-Lax. Could be it injures them (extreme dehydration) but my kids and I chuckle away around the campfire conjuring up images of a wide-eyed thirsty raccoon with uncontrollable diarrhea and a lost desire to return to the location of that particular source of easy pickens. What I do know is ensuing camping nights are usually raccoon free!