Compost Tumbler In Mumbai Compost Well Tumbler: Compost tumbler, a fully sealed container which can be rotated to mix the composting materials. Speeding the process of converting kitchen and yard waste into compost. Simpler and faster. Push the unit or turn a crank once or twice a day. Each rotation introduces more air into the system, and mixes the materials together. This helps speed the composting process. To harvest the finish compost, stop adding materials to the tumbler and keep rotating it daily until the compost is ready.