Gross! Also… a sizable percentage of the granules get flushed down the toilet. I haven’t researched Those people precisely… but I'm able to’t consider that it's superior in your plumbing. The granules appear to be plastic. Maybe they biodegrade? Idk.. not my fav. We've been looking in to other devices. https://ledbookmark.com/story5906080/automatic-litter-box-for-dummies