I actually have one in one of my boys' tub. LOL! He fits so perfectly in them! I know if he knew what was on outside, he's be striking at me alot more! Maybe that's why he was so feisty earlier.... lol.
I cut them that way so when I have a live feeder in the tub and the snakes are taking their sweet time on getting lined up for a strike, the rat can't take cover in their hide. So far, it's worked really well.