I know this is going to sound crazy, but here in WI, we use Deep Woods OFF to keep the bears off our cams. Of course we only spray the cams with OFF when they're on bait sites, but we didn't have so much as a mark on the enclosures. I'll look around, but I've got one closeup of a bear and the next one is it's tongue. The next pic the bear was back at the bait....didn't like the taste....lol. Just a thought for ya to try.