We Compared 6 Compost Bins on Volume Against a Cubic Yard

Why the GEOBIN wins this category

Volume, and nothing else needs to be said first. At 246 gallons the GEOBIN holds about 33 cubic feet, which clears the one cubic yard, 27 cubic foot, mass that a pile generally needs before it can hold its own heat.

Only one other bin here does that. Everything else in this guide is a container that stores coop litter neatly while it slowly does very little.

The price makes the point sharper. At $35.99 this works out near $1.10 a cubic foot. The sealed dual chamber tumbler in this guide costs three times as much and holds 18.5 gallons a chamber, about 2.5 cubic feet, so one deep litter strip-out from a small coop fills it on its own.

Living with the GEOBIN

Setup is the whole appeal. It ships as a 36.5 in roll, you wrap it into a circle up to 3.75 feet across, and the closure keys hold it there. There is no frame, no fasteners and no assembly session.

Those keys also change how you harvest. Instead of digging finished compost out of a door, you unclip the ring, lift it off, and the pile is standing there in the open with the good material at the bottom. Rebuild the ring next to it and fork the unfinished top back in. That is a faster way to turn a big pile than any door design here allows.

Where the GEOBIN falls short

It is a ring, not a bin. There is no lid and no door, so in a wet autumn rain goes straight in and a waterlogged pile goes anaerobic and starts to smell. A tarp or an old coop panel across the top fixes that for nothing, but you have to remember to do it.

It also looks like what it is, a pile of coop litter in a plastic hoop. In a small yard with neighbours close by, that matters.

Two things in the listing are worth knowing before you order. The material is never stated, only that it is made in the USA, so there is no way to judge how the plastic will handle several summers of UV. And the capacity does not agree with itself: the title says 246 gallon while the bullets say 237 gallon and 3.75 feet across. Both figures clear a cubic yard, so the recommendation stands, but do not treat the headline number as precise.

Why the Trellume 285 gallon earns its place

It is the biggest bin here and it is a proper bin rather than a ring. 285 gallons converts to about 38 cubic feet, which is over 40 percent more than a cubic yard and the most composting volume in this guide.

For a large flock that gets a real coop strip-out every week, that headroom is the point. A pile you keep feeding never gets a chance to finish if the bin is small, and undersized bins are why so many keepers end up with a heap beside the bin as well as in it.

Living with the Trellume 285 gallon

The bottom harvesting door is what makes the size workable. Finished material sinks, so you take compost from the base while fresh litter still goes in at the top, and the pile keeps running as one continuous system rather than in batches.

Four-sided aeration vents matter more at this volume than they would on a small bin. A 38 cubic foot pile of bedding-heavy litter can pack down and go airless in the middle, and cross-ventilation on every face buys you a margin between turnings.

The metal body with an anti-rust coating and a painted finish is the right choice for something that will sit outside for years. Thin plastic bins go chalky and crack in UV. This will not.

Where the Trellume 285 gallon falls short

Cost per cubic foot. At $149.99 for 38 cubic feet, this is close to $3.95 a cubic foot, while the open ring bin in this guide delivers about 33 cubic feet for near $1.10. You are paying about three and a half times per unit of volume for a lid, a door and a tidier object.

It is also permanent in a way the ring is not. 36.4 lb of assembled metal at 41 in square does not get carried to a better corner of the garden after you have filled it, so decide on the spot first, ideally somewhere with drainage and a bit of shelter.

The last point is a winter one. Metal walls conduct heat out of the pile at the edges, so the outer layer finishes later than the core in cold weather. Turn the outside into the middle if you want the whole batch ready together, and do not judge the pile by poking a thermometer near the wall.

Why the JupiterForce 120 gal earns its place

The missing bottom. This bin sits directly on soil, and that changes what happens inside it. Worms, beetles and the fungal life already in your garden move up into the pile from below rather than having to be introduced, and excess moisture drains away instead of pooling on a plastic floor.

For coop litter that is a useful match. Bedding-heavy material is slow and dry, and a bin open to the soil gets biological help for free.

At 120 gallons it holds about 16 cubic feet, the third largest volume here, and at $43.69 it works out around $2.70 a cubic foot, the second cheapest volume in this guide.

Living with the JupiterForce 120 gal

The access design is sensible. A top lid to load and a sliding door at the base to harvest means you can keep adding fresh clean-outs on top while taking finished material from below.

Four vents per side is a reasonable amount of airflow for a bin this size, and the BPA free plastic body is described as frost and rain proof, so it should not go brittle in a hard winter. At 26.5 by 27 in it takes a modest footprint, which suits a small yard better than a 41 in metal box does.

Where the JupiterForce 120 gal falls short

Volume, honestly measured. 120 gallons divided by 7.48 is about 16 cubic feet, which is well under the 27 cubic feet a pile generally needs before it can hold its own heat. This is not a hot composting bin. It is a good slow bin, and slow means months and a long cure rather than the weeks people hope for.

The listing itself is the second problem. The title sells it as a tumbler, and the description says it is a static bin with no bottom. The description is right and the description is also the better product, but a title that contradicts its own bullets is a reason to read every other claim carefully.

The open base has a cost as well as a benefit. Coop litter carries spilled feed, and anything that can dig will find its way up into the pile from underneath. If you already have a rat problem, a sealed bin is the safer choice.

Why the Redmon 65 gallon earns its place

Access from four sides. Most static bins give you one harvesting door, and if the bin ends up backed into a fence corner, that door has a habit of facing the wrong way.

The Redmon 65 gallon puts a door on each of the four faces at the base. Wherever the bin ends up, at least one door stays in front of you, and you can take finished compost out of the bottom without dragging the bin away from the wall first.

At 15 lb and 26 in square, it is also light enough to lift into a gap that a heavier bin will not go into.

Living with the Redmon 65 gallon

The lift-off lid seals the top against rain, which matters if the bin is somewhere it cannot be tarped. Vent holes on the body keep a little air moving through the pile between turnings, and turning a bin this size is a five minute job with a fork rather than an afternoon.

It is made from 80 percent recycled materials, which is a fair thing to want from a composter, and 26 by 26 by 30.75 in is a small enough object to disappear behind a shed.

Where the Redmon 65 gallon falls short

The volume is the whole problem. 65 gallons is about 8.7 cubic feet, less than a third of the roughly 27 cubic feet a pile needs before it can hold its own heat. Nothing in this bin will get hot, so treat it as a slow, cold pile that takes many months and needs a long cure before the compost goes anywhere near food crops.

The price sharpens that. At $66.99 for 8.7 cubic feet you are paying close to $7.70 a cubic foot, one of the dearest volumes in this guide, and the open ring bin here gives you nearly four times the volume for about half the money.

The lid design has a small daily cost too. A lift-off lid has to go somewhere while you tip a bucket in, and in a narrow gap beside a fence there is nowhere to put it.

Why the Miracle-Gro tumbler earns its place

It is the only bin here you could reasonably put on a deck. Two sliding doors with side-locking mechanisms and tight seals, a sealed drum and a galvanised steel base off the ground add up to something rodents cannot get into, which no open pile can claim.

For a keeper with two or three hens in a suburban garden, that is a real problem solved. Coop litter carries spilled feed, feed draws rats, and rats near a coop are worse than a slow compost pile.

The dual chambers are the other genuine advantage. One side rests and finishes while you keep loading the other, so you always have somewhere to put today's bucket.

Living with the Miracle-Gro tumbler

Turning is a handle, not a fork, which matters a lot to anyone with a bad back or a small yard with no room to swing a tool. The BPA free food grade UV-protected plastic should stay flexible for years rather than going chalky and splitting the way cheap bins do.

Loading through a sliding door keeps everything contained, so there is no scattered litter around the base and no smell drifting to a neighbour's fence.

Where the Miracle-Gro tumbler falls short

Size, which for chicken keeping is decisive. Each chamber is 18.5 gallons, about 2.5 cubic feet. One deep litter strip-out from a small coop will fill a side on its own, and at 4.9 cubic feet across both chambers this bin holds less than a fifth of the roughly 27 cubic feet a pile needs to hold its own heat.

At $109.87 that is by far the dearest volume in this guide. The $35.99 open ring bin here holds about 33 cubic feet, more than six times as much, for a third of the money, and on coop clean-outs that is the comparison that counts.

Treat the stated 4 to 6 weeks as a manufacturer figure for chopped garden waste in warm weather. Coop litter is bulky and carbon-heavy and will not run to that schedule. Long straw and stringy bedding also tangle in a rotating drum and stop it mixing evenly, so chop or shorten anything long before it goes in.

Why the JupiterForce 18.5 gal earns its place

Price and footprint. At $22.99 it is the cheapest thing in this guide, and at 23.62 by 19.29 in it fits places no static bin will go, including a balcony or the narrow strip down the side of a house.

If your composting is mostly kitchen scraps, with the occasional bucket of nest box sweepings from two or three hens, this is a sensible object at a sensible price. Turning is a hand job on the drum rather than a fork job on a heap, and the drum sits on a support frame so nothing is standing in damp ground.

Living with the JupiterForce 18.5 gal

The sliding door is 9.25 by 7.48 in, which is wide enough to tip a small bucket through without spilling half of it down the side. PP plastic is a reasonable material for a drum this size, and there is no assembly complexity to speak of.

Because it turns easily when it is not full, mixing is genuinely effortless, and that is the one thing tumblers do better than any static bin here.

Where the JupiterForce 18.5 gal falls short

The volume is the honest problem, and it is a big one for chicken keepers. 18.5 gallons converts to about 2.5 cubic feet, which is roughly a tenth of the 27 cubic feet a pile needs before it can hold its own heat. Nothing in here will get hot, ever.

One deep litter strip-out from a small coop fills the drum in a single go, at which point you are done for the season unless you empty it half-composted. That is worse than it sounds, because there is only one chamber. Every fresh bucket resets the batch, so either you stop feeding it and wait, or you keep feeding it and never harvest anything finished.

Take the stated 4 to 6 weeks as a manufacturer figure for chopped garden waste in warm weather. Coop bedding is bulkier, drier and heavier on carbon, and it will run far slower than that even in a bin the right size, which this is not.