Mantis Back Porch ComposTumbler
- 37 gallons, 5 cubic feet, holds 4 bushels
- Compost in 4 to 6 weeks, per the maker
- Two 6 inch wheels for rolling to garden beds
- Food-grade polyethylene drum, BPA free, made in USA
- Fully enclosed barrel with removable door
- 38 lb unit weight
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A rolling tumbler for a small yard or porch that turns kitchen scraps and trimmings into compost and wheels it to the beds. The modest drum suits one household, not the yearly yard waste of a big garden.
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ASIN: B06XDF9DK5Category: Composting Bins
Overview
Interior fins inside a rotating plastic drum mix the contents each time the barrel is turned by its grip grooves, while vented end caps let air in and moisture out. Mantis sized the Back Porch ComposTumbler for urban lots and small properties, and its wheels roll finished compost straight to the garden.
Mobility sets it apart: the whole drum rolls to the bed on its wheels, so there is no shoveling compost into a cart. Capacity stays small, and a household with lots of leaves and grass clippings will fill it fast.
Who it's for
Urban gardeners and owners of small properties get an enclosed drum that blocks odors and animals and moves on wheels. Households with big lawns and heavy leaf fall need more volume.
Pros and cons
- Enclosed drum blocks odors and animals
- Wheels roll compost straight to beds
- Removable door for filling and emptying
- Interior fins mix while turning
- Small volume for large yards
- Color listed as both red and green
- Warranty term not listed
- Assembly instructions point to some setup
Performance notes
Speed of composting depends on how often the drum is rotated, since the fins fold fresh material into the warm core and the vents feed it oxygen. Excess moisture drains out through the vents, so the mix does not stay soggy.
Specifications
| Brand | Mantis |
|---|---|
| Dimensions & fit | |
| Item weight | 38 pounds |
| Item Dimensions L x W x H | 31 × 26 × 37 inches |
| Capacity & performance | |
| Capacity | 37 gallons |
| Construction & materials | |
| Material Type | BPA Free Food-Grade Polyethylene |
| Included components | |
| Included components | Tumbler, assembly instructions, owner's manual |
| Other details | |
| Shape | Cylindrical |
| Country of origin | USA |
| Wheels | Two 6 inch wheels |
Frequently asked questions
How much space does the Mantis Back Porch ComposTumbler need?
Assembled, it measures 37 inches high, 31 inches wide and 26 inches deep, sized for a porch, patio corner or small yard.
Does the Mantis ComposTumbler stop animals and smells?
Yes. The fully enclosed drum is designed to eliminate odors and block animals.
Is the Mantis Back Porch tumbler made for large volumes of yard waste?
No. It holds about 4 bushels and was developed for urban spaces and smaller yards, so big leaf and grass loads will outgrow it.
How do you empty the Mantis Back Porch ComposTumbler?
Open the removable door, roll the unit on its wheels to the bed, and empty the finished compost there.
What comes with the Mantis ComposTumbler?
The tumbler, assembly instructions and an owner's manual. The warranty is listed only as limited.