I put fish waste in mine, along with kitchen scraps, no meat, egg shells are fine. I might also add that not a lot of fish waste. Mostly skins and crab and prawn shells. It does smell so if you have a small yard stick with veggie waste and grass clippings. We keep our grass clippings out of the garden compost. We have had a chick weed invasion as the result of grass clippings in the garden compost. I also compost sea weed. The down side of sea weed is it may add salt to the solid and a lot of plants don’t like it, like raspberries.