Alright, well my little one just LOVES to burrow. I used to often see her sleeping UNDER her fleece liner, and on the Coroplast. She was doing this for over a week, every night. so i tried to un-fold it so it's only one layer, and put the fabric over the sides.... when she'd walk around, she's pull the fabric somewhat, so it makes like a ramp, and try to climb over the top of the cage!!!!!! BIG No-No!!!! SO I tried using like the puppy training pads and taping 5 of them on the bottom of the cage so I can just pick up the pads every 2-3 days and throw them out instead of having to continuously wash (drove my mom crazy), come to notice, she's find little gaps between the tape and the bottom pad, and burrow her way under those! It seems like she'd prefer to sleep on coroplast than something warmer and comfy -_- she has an igloo where she SOMETIMES sleeps (she likes to sleep behind it for some reason.. squeezing between igloo and wall lol), and i have a corner of the cage full of cut up fleece and two big pieces of fleece for her to bury. She really doesn't go into her igloo if has the fleece... I'm not sure why. But anyways.... any advice? Should I just let her sleep on the coroplast and keep the cut up fleece in the corner in case she wants to borrow??