Wow, quite the chew job there. None of my rats have managed to chew out of a large roughneck rubbermaid container I used for my rats (when I had some). I used duct tape to fix the mesh over the holes in the lid but duct tape peals off after awhile but my rats didn't do much chewing around the rim though. My female was starting to jump and try and grab onto the mesh (why I have no clue) She would stand on the floor of the cage and jump straight up and grab onto the mesh but then drop down as she didn't get a good enough grip on the mesh. Good thing it was 1/4" instead of 1/2", else she probably be hanging off the wire.
My mice on the other hand, I never had covers on their cages, till I got the olympic jumpers. Never thought a mouse could jump 13" straight up to grab the lip of a sterlite container before. Seen them jump in the corners before but since they never made it more than 2/3rds of the way up, didn't think nothing about it. Then I came up the stairs ot see one of my young mice looking back at me from the step. Same little bugger that I had seen trying to jump up. Caught him later, after I put him back in the cage, doing the same thing...and of course, all the other mice in the cage were watching him. Sigh. Lids for all the mouse cages now.
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PHLdyPayne