Yeah some of mine leave some liquid that if not cleaned up fast enough, and they decide to run through it can be a real mess. I keep extra sets just for this type of thing which I suggest people do. If one needs a big cleaning you can soak it, clean it, hang to dry and put a fresh one in. If you know yours has runny stools often, and you are not coming home for extended periods paper towels on top could help cut down some of the mess you would have when you came home to feed, spot clean etc. Shelf liner is not for everyone, especially those who are away from home for extended periods where the dragon has the time to make such messes, or those who want extravagant cages with lots of funiture=things to clean if you plan to clean daily, and with choosing shelf liner you choose to clean daily to keep really clean cages. I've found in my situation with feeding 3 x a day, multiply cages a lot of time is devoted to the dragons daily anyway. 3 times a day if not more I'm looking in the cages and catch most of the poop before they get a chance to do the damage. It's not for everyone, but if you can make it work there is not much easier, safer, and cleaner for your dragons.
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