That's one of the reasons why I use corrugated wrap over straight up paper now. it is much beefier so they can't mess with it as much but is just as easy to keep clean.
If I could find corrugated wrap the exact width of an Iris MCB-L tub, I might consider switching over. I have no problem cutting it to length, but cutting to both length and width is a PITA.
Thomas "Slim" Whitman
Never Met A Ball Python I Didn't Like