Gross! Also… a large portion of the granules get flushed down the toilet. I haven’t investigated Those people precisely… but I'm able to’t imagine that it's fantastic on your plumbing. The granules seem to be plastic. Possibly they biodegrade? Idk.. not my fav. We are looking in to other methods. https://bookmarkmoz.com/story20218771/the-fact-about-automatic-litter-box-that-no-one-is-suggesting