 the squirrels would never be able to get to that birdhouse. Do you know of something I can insert in the hole, though? Right, but if you insert it in the hole, the squirrels are still going to hang out in that birdhouse, and they might try to shoot their way in via another area. Right. So that's why I'm saying that I would not focus on reinforcing the birdhouse as much as I would focus on moving it to an area that's less likely to be attacked by squirrels.