Yeah im always extra cautious with mine. I figured out after reading alot of posts about people have issue with them escaping, that the tub they live in being colored is usually the culprit. They can't climb up clear steralite, but the colored plastics seems to have some kind of texture that is just enough for them to climb out. And if I drop one during feeding I just smash it, no use trying to catch them. And as my backup my cat takes care of them as soon as they make their way out of the critter room.