Personally I believe The difficulty may be the Guar Gum binder. Guar Gum can work as a laxative (CITATION) and I suspect the amount they use is too much for some cats mainly because there are no carbs/starch to counteract the laxative result. Not Everyone will require an automatic feeder https://rafaelwitcm.blogoxo.com/35700350/the-pet-stores-diaries