I don't have a cat but I read A LOT. Dr. Batmanghelidj wrote about pets using specific salt ratio in water and its in earth clinic somewhere but I can't find the ratio....a book in my pile has it somewhere. Anyway he used it to treat many pet diseases. Sea salt with minerals in it. So many amazing testimonials from people who used it. Salt works like an antihistamine because histamine is caused by a mineral salt/water imbalance. salt holds water in place and water helps our intestines move the food through to the exit port. Need the right ratio to do this.