Do you have any critter keepers? You just need something with a locking lid. These guys are great escape artists and believe it or not their pretty strong when it comes to pushing up lids. If you are going to be poking holes in anything plastic for air holes make sure you poke from the inside out as sharp edges of the plastic being poked in can hurt the frogs. Shhh...don't tell anyone but I've used the family tupper ware containers.