Personally I wouldn't bother. It seems like it'd be less of a hazard than other things you might line the wheel with, but if his feet were drier after you tried it, I wouldn't continue doing it. Not sure if it'd be from the urine or just from running on the paper towels though.
~*~*~ Kelsey ~*~*~
RIP my sweet Lily ~ 6/12/08 - 1/20/12