Actually, law enforcement folks will tell you that wasp spray or yard fogger is one of the best self defense items you can keep in your house. When my next door neighbor and I were teenagers we read this somehwere and decided to try it out. I managed to drop his little brother to his knees from over 20' with one spray. It's a wonder he ever had kids. Seeing as how a bear's sense's are even more sensitive than a human's, I would suspect that they would be thoroughly replelled by the stuff. I still maintain that the 4 legged critters won't bother you.......'cept for the tourist-hungry bears in the Smokies, that is.