And another little trick with the crickets is take there back legs off, this way they cant jump to the higher parts of the tanks. They have to walk up the branches and leaves and when they are moveing that slow I don't think any will get buy your frogs. I use to have the odd escape when feeding my fire belly toads crickets and since doing it this way I haven't had one. Even if they make it to the top once they reach out to crawl the glass they fall, if they cant get to the top ledge were the hole would be they aren't getting out.