Gross! Also… a significant portion of the granules get flushed down the toilet. I haven’t researched those specifically… but I am able to’t imagine that it is good for the plumbing. The granules appear to be plastic. Perhaps they biodegrade? Idk.. not my fav. We have been seeking in to https://petskyonline-onlinestrore.blogspot.com/2025/07/petkit-purobot-ultra-premier-auto.html