I have been feeding my cats Diamond Feline Maintenance for years. I rarely ever have health problems except for my very old cats. I have several around 18 years old. They absolutely love the food. I have 23 cats which is a fairly decent test group. They range from 2-18 years old healthwise we have very little problems except for the older ones. All love the food. I do an extreme amount of fostering and I have never had a cat dislike it.