These are a must need to have when you are housing snakes and lizards, alot of people use heavy objects like phone books etc... but that will only hold them for so long, the clamps are the way to go.

Pros: Keeps your snakes and lizards in there cages

Cons: none

I've always used these aquarium screen cover clips. They are durable and do a great job at keeping your pets in. I've used them on rats, gerbils, hamsters, snakes and mice. They are sometimes hard to get off, but once you get the hang of removing them, they work well. The idea is for them not to come off too easily.

Pros: Keeps pets in

Cons: no cons

Does its job well...my pets have yet to escape.

Pros: Keeps pets in

Cons: Non