I let my cat out this morning...he never leaves the yard...just patrols the perimeter and thumps anything that crosses the line. Anyway, I didn't see him for a long time so I went looking. I'd tossed a shrimp pot behind the garage and a bunch of tweety birds had made there way inside and of course couldn't figure out how to escape. The cat is sitting there all stressed out wishing he could figure out how to get in. I ran him off, released the birds, and plugged the entry ports. Would have felt like a real jerk if I had found them too late. Cover/plug your pots if stored outdoors...just a thought.