Mantis CT08002 Back Porch ComposTumblerMantis CT08002 Back Porch ComposTumbler The Back Porch ComposTumbler is the small composter developed for urban composting and backyard use and makes compost in as little as 4 6 weeks*. You dont need a lot of environment to be environmentally friendly. Mantis has expanded the world of composting to gardeners with smaller yards. The mobile design includes two wheels for easy and lightweight transport. Holds 4 bushels. Features: Turning grooves Rotating