Has anyone used the hagen small pals pen living world cages ? They are superior to pet pals and priced comp.They have a blue lid of much better design . Many sizes to choose from , I think pet pals are o.k. in the larger sizes , but the popular mini size sucks! The lid is poorly manuf. ; makes too much noise, and lots of sharp edges. Also they are hard to cover effic. for humid species. You can purchase the hagens at ; Petsmart, some local pet shops, and That Pet Place. I've been using them for about 6 mon. with great results, my Aphono. 's burrow around the side and you can see the whole burrow.