Put your mattress out in the street to catch them if you're that worried.

I've seen small birds take a ball of fire to the face, how bad could falling out of the sky...be...

[The trail off is because one of the cats has landed on the ground right outside his shelter and is now Staring at him.]

[And he kind of can't help staring back, these things are a little creepy and he's not sure if he wants to take his eyes off of it.]