Gross! Also… a sizable percentage of the granules get flushed down the rest room. I haven’t investigated These accurately… but I'm able to’t imagine that it's great in your plumbing. The granules seem to be plastic. Probably they biodegrade? Idk.. not my fav. We are wanting in to other methods. https://petskyonline-onlinestrore.blogspot.com/2025/07/petkit-purobot-ultra-premier-auto.html