When is it safe to feed expired Cat food? Ideally, you should only buy an amount of cat food that your cat or cats can eat in a month. Also, it is ideal that this food is not expired.
The safest advice I can give is to say – if it is expired, don't feed it.
What would I do? If a food smells and looks okay and it has expired within the past few months, I'd probably feed it to my cats.
For more information, please read Nutrition in Cats.