I have a longhaired indoor cat. She gets hairballs and it is gross. I was giving her hairball treatment treats and then I switched to food (Meow Mix). Later, she got an infected uterus. The vet told me those products are high in magnesium (fish) and that can cause it. The vet said I should switch to Purina and get the urinary track health one. I switched, but I would like to find a natural way to treat her hairballs, but I don't know any. Please offer any advice. I want the hairballs to go away!