The first layer cleans your hole that often gets messy for kids everywhere with hope of the right kind of meal to get your clean poop.No need- clthe tube attaches to your hole, sucks all the crap, and filters all the muck into a storage, which extracts nutrients and health hazards and disposes of the necessary - health hazards. The tube essentially directs toxic waste into the hole, and avoids 90% of cleaning with paper, then to only attach a slimy paper that is sticking lightly to your area, while sucked by the tube, this way - it's easy to stay clean and use one tube to leave in less than a minute, perfectly and ideally. Self cleaning, picture a vacuum tube, and stick in your lock box for it.