Additional features Use indoors during winter and outdoors in ummer Can house 6,000 worms (not included) that consume 5-8 lbs. of food per week Approximate weight is 13 lbs. 5 year warranty on parts and workmanship Recycles kitchen waste and junk mail into nutrient-rich compost Compact design with odorless operation What is The Worm Factory® 3-Tray Worm Composter - Terra Cotta and how does it work? The Worm Factory® is a multi-tray worm composter that helps manage the composting process. Fill each stacking tray with kitchen scraps such as newspaper, junk mail, vegetables, fruits, egg shells, coffee grounds, paper, and cardboard into nutrient-rich compost for your garden. Most "Master Gardeners" consider worm castings to be the very best compost available. Your plants will thrive with this all-natural compost