We have Critter Trail stuff for our mice. It was hand-me-down so we wanted to clean it out really good and it was so easy. The tubes and even the cage broke down into littler piece we just soaked in water. Alex LOVES the tunnels but Puck seems happy with the wheel mostly. The cool thing is you can rearrange all the stuff however you want. the pieces are pretty easily reconfigured into just about whatever you want.

The only thing I dont like about it is that the more elaborate the design..the harder it is to piece together without something snapping out of place...so I super glue the pieces together so they stay in place

what else is dont like is the cleaning part bc they are not the easiest to clean..I like to soak mine when I clean them

^^I know! Those things are so hard to assemble I get so frustrated with them.