I do, and they gobble it like its fresh fish! And yes i think is great for them! I ferment it 2 days and feed out. Its been a huge plus. One of my cats came here nearly bald and anemic from fleas. You wouldn't believe how good she looks now, and has a lil pudgy belly 
. I only have outdoor barn cats, they are strays that get dumped out here. I have them fixed, wormed and shots. They live their lives out with us unless I can rehome them.. rarely happens.. My mom is a dialysis patient so there is no indoor pets except a pug (she does not get on moms lap or the furniture, only my DH's chair) and fish. Oh, my daughter has sugar gliders. they stay in her bedroom.