i use it, and it clumps together pretty well. it's kinda hard to tell if something is soiled, but it looks darker than the rest of it. i just use a plastic spoon and some newspaper and throw it in the trash. but if you leave it wet for too long it can mold, but i've never had that happen because i usually get to it pretty quick. so, overall, i'd say it's pretty easy to clean and change out. but that also depends on what kind of a tank/tub you have...
Cause when push comes to shove you taste what you're made of
You might bend, till you break cause its all you can take
On your knees you look up decide you've had enough
You get mad you get strong wipe your hands shake it off
Then you Stand
yeah i have that problem with her eating the stuff, but it isn't harmful to them, so it's not a huge deal. just a little nasty wood along with that delicious mouse!