Maybe a paint ball gun would keep him away or at least out of the yard until you could get into the house.

I doubt it would, since some bears can climb trees. An invisible fence that gives a shock might though.

I think invisible fences that shock only work with a collar, like for dogs.
I wouldn’t want to wrestle Smokey the Bear down to the ground just to strap a receiving collar on him.

Not to mention getting it off him to charge it, and then putting it back on again.

I doubt it would, since some bears can climb trees. An invisible fence that gives a shock might though. It wouldn’t hurt to look into some sort of device to keep the bear out of the actual yard. Because it might get comfortable and try to get inside the house. The Bobcats near my dad’s house have all kept a distance (except to eat pets that are mistakenly left outside, but to do that, they need to compete with the coyotes).

My parents (well, now just my dad, it’s so hard to get used to saying that) live in Tucson and they routinely have Bobcats outside their house. Tucson is very protective of its wildlife, so they don’t allow any hunting or harm to the wild cats, which is GREAT, but it’s still kind of frightening because those suckers’ll kill ya dead, too, just like a big black bear would.

So cool!