Kit includes caddy biodegradable caddy bags 20 bags and replacement odor filters pack of 6 that last up to 4 months. Suitable materials for composting are vegetable and fruit peelings egg shells tea leaves coffee grounds and cut flowers. Do not include meat and fish scraps or dairy products. The tight-fitting lid along with the filter helps neutralize odors. This sturdy yet lightweight caddy saves trips to the composter by allowing you to only add waste to the composter when the caddy is full!