When our new kitten started to show an interest in the piggies, it was time to cover our 2 x 4 cage (also bought here). Admittedly I tried first to build a grid cover on my own for less $$, and it looked good but collapsed way too easily. Im so glad we invested in this cat-tested cover from GPCC. The structure bar and overlap design is far sturdier, plus easy to open for cleaning and feeding. We now have a full size Australian shepherd too, and he doesnt mess with the cage either. We use large binder clips to secure the cover as an extra measure of protection. If you have other pets, this cover will help keep your cavies safe. Thank you to GPCC for the quality of your products, its clear you care about the little furry ones!