Deep Litter Method for Chicken Coops: How to Start and Maintain It
Last updated: November 2026 · From the KRMPLANS team, designers of DIY building plans
Quick answer: The deep litter method means letting coop bedding build up instead of replacing it weekly. Start with 4 to 6 inches of dry carbon bedding such as pine shavings, straw, or shredded leaves, stir it every few days, add fresh material whenever it looks wet or smells of ammonia, and let it grow to 8 to 12 inches. Clean it out once or twice a year and compost it.
If scooping and replacing coop bedding every week sounds like more work than you signed up for, deep litter is worth a look. It cuts down on chores, makes a slow-working compost right on the coop floor, and adds some warmth in winter. This guide explains how the method works, what materials to use, how to keep moisture and ammonia under control, and when it is time for a full cleanout.
Key Takeaways
- Deep litter is a managed layer of carbon bedding that slowly breaks down with the droppings on the coop floor.
- Start at 4 to 6 inches and build up to roughly 8 to 12 inches over the season.
- Turn the bedding every few days and add a fresh layer when you see wet spots or smell ammonia.
- Good ventilation is required. Deep litter in a stuffy coop becomes a damp, smelly mess.
- Protect wood floors with sheet vinyl or a sealed finish, or use the method on a dirt or concrete floor.
- Clean out once or twice a year and compost the old litter before using it in the garden.
What Is the Deep Litter Method?
The deep litter method is a coop bedding system where you keep adding fresh carbon material on top of old bedding and droppings instead of removing it, so the layer slowly composts in place. Microbes in the litter break down manure, and the chickens help by scratching and turning it.
Done well, a deep litter floor smells earthy rather than sharp, stays dry and fluffy on top, and only needs a full cleanout once or twice a year. University of Maryland Extension notes that deep litter also generates heat as it is broken down by microbial action, which is one reason many keepers in cold climates like it.
Deep litter is not the same as simply never cleaning the coop. The difference is active management: the right carbon-to-manure balance, regular turning, and enough airflow to carry moisture away.
How Deep Should Deep Litter Be?
Start with 4 to 6 inches of dry bedding and let it build to 8 to 12 inches over several months. A thin layer cannot absorb enough moisture or hold the microbial activity that makes the method work.
That depth also helps in winter. University of Illinois Extension says a deep, 6 to 12-inch layer of dry bedding on the floor will provide insulation and helps keep birds' feet warm. Plan your coop door and pop door thresholds so they sit above the final litter height. A 10 to 12 inch threshold board at the people door keeps bedding from spilling out.
What Bedding Materials Work Best for Deep Litter?
The best deep litter materials are dry, absorbent, high-carbon bedding: pine shavings, chopped straw, shredded dry leaves, hemp bedding, and wood chips. Mixing two or three of them gives a better texture than any single material.
Carbon matters because chicken manure is very high in nitrogen. The University of Kentucky Cooperative Extension Service lists chicken manure at a carbon-to-nitrogen ratio of about 8:1, compared with roughly 80:1 for straw and 60:1 for dry leaves, and explains that litter smelling of ammonia has too little carbon or too much nitrogen. Adding more carbon is the fix.
| Material | Absorbency | Breaks Down | Pros | Cons |
|---|---|---|---|---|
| Pine shavings (large flake) | High | Slow | Easy to find, light, low dust if kiln dried | Can be slow to compost alone |
| Chopped straw | Medium | Medium | Cheap, good insulation, composts well | Long straw mats and can hide mites; chop it |
| Shredded dry leaves | Medium | Fast | Free, feeds the microbes, chickens love scratching | Must be dry; wet leaves pack down |
| Hemp bedding | Very high | Medium | Excellent moisture control, low dust | Costs more |
| Wood chips | Medium | Slow | Good for dirt floors and runs | Coarse; mix with finer material |
| Hay | Low | Fast | Sometimes on hand | Holds moisture and can mold; avoid |
Many keepers skip aromatic cedar shavings in enclosed coops and avoid sand for deep litter, since sand does not compost.
How to Start and Maintain Deep Litter
- Start with a clean, dry floor. Late summer or early fall is a good time, so the litter is established before winter.
- Lay 4 to 6 inches of mixed carbon bedding. Some keepers add a few handfuls of garden soil or finished compost to introduce microbes.
- Turn the litter every few days. Use a pitchfork or garden rake, or toss scratch grains on it so the chickens do the work.
- Check moisture weekly. Squeeze a handful. It should feel barely damp, never wet or soggy.
- Top up as needed. Add 1 to 2 inches of fresh bedding when the surface looks dirty, wet, or crusted.
- Remove problem spots. Pull out wet bedding around waterers and any thick manure piles under roosts that will not mix in.
- Do a sniff test. If you smell ammonia when you walk in, add carbon, stir, and increase ventilation right away.
How do you control moisture and ammonia?
Control moisture by keeping water sources off the litter, increasing ventilation, and adding dry carbon as soon as wet spots appear. Ammonia is a sign the litter is too wet or too nitrogen-heavy, and it irritates chickens' eyes and airways.
Move waterers onto a raised stand or outside the coop, fix roof leaks, and make sure high vents stay open year-round. Our chicken coop ventilation guide explains how much vent area to plan. A dropping board or poop tray under the roost also removes a large share of nightly manure before it hits the litter, which makes deep litter much easier to balance.
Does Deep Litter Work on a Wood Coop Floor?
Deep litter works on wood floors, but only if you protect the wood from constant moisture. Composting bedding sitting on bare plywood for months will soften and eventually rot it.
- Dirt floor: The traditional choice. Soil microbes and drainage make the method work best, but you need a buried hardware cloth apron or floor mesh to stop diggers.
- Concrete floor: Durable and easy to clean out. Litter stays a bit wetter at the bottom, so add more carbon.
- Wood floor with sheet vinyl: Lay a single piece of sheet vinyl or linoleum, run it 4 to 6 inches up the walls, and seal the seams. This is the most common approach in raised coops.
- Wood floor with sealed finish: Several coats of exterior paint or a floor sealer help, but they wear faster than vinyl.
Choose pressure-treated or rot-resistant lumber for floor framing and the lower wall plates. Our best wood for a chicken coop guide compares the options. If you are building from scratch, a walk-in design makes turning and cleaning out the litter much easier. The modern farmhouse chicken coop plans provide a 10x14 walk-in layout, and the skillion shed roof coop plans pair a 12x10 walk-in coop with a 14x10 run. Each KRMPLANS plan includes framing drawings, a floor plan, and a shopping list, so you can add vinyl flooring and a taller door threshold to your build.
DIY Modern Farmhouse Chicken Coop Plans: 10x14 Walk-In, Twin Gable Run: instant PDF download with illustrated steps, a shopping list and cut lists.
When Should You Clean Out Deep Litter?
Most keepers do a full cleanout once or twice a year, often in spring and late summer, leaving a few inches of old litter behind to seed the new layer. Clean out sooner if the litter stays wet, smells of ammonia even after adding carbon, or you have a disease or parasite problem.
For routine litter management, the University of Kentucky guide suggests cleaning out the coop when the litter has about 40% manure and 60% bedding material. Wear a dust mask and gloves during cleanout, since dry litter dust can carry irritants.
How do you compost old chicken litter?
Pile the old litter in a compost bin, keep it about as damp as a wrung-out sponge, and turn it periodically until it is dark and crumbly. The University of Kentucky guide notes that composting makes the manure safe to use as a fertilizer on any lawn or garden, and that simply piling up waste is not really composting. Fresh chicken manure is too strong for plants and can carry pathogens, so do not spread it straight onto vegetable beds. Finished compost works well in garden beds.
Common Mistakes to Avoid
- Starting too thin. Two inches of bedding is not deep litter. Begin at 4 to 6 inches.
- Using deep litter in a poorly vented coop. Without airflow, moisture builds and ammonia follows.
- Putting the waterer on the litter. Spills create a soggy patch that never dries.
- Skipping the turning. Compacted, crusted litter goes anaerobic and smells.
- Using hay instead of straw. Hay holds moisture and molds.
- Laying it on bare plywood. Protect the floor with sheet vinyl or a sealed finish first.
Frequently Asked Questions
How often do you clean a deep litter chicken coop?
Most keepers do a full cleanout once or twice a year, usually in spring and late summer. Between cleanouts, turn the litter every few days and add fresh bedding whenever it looks wet or smells of ammonia.
What is the best bedding for the deep litter method?
A mix of large-flake pine shavings, chopped straw, and shredded dry leaves works well. Pine shavings absorb moisture, straw adds bulk and insulation, and leaves break down quickly and feed the microbes. Avoid hay, which molds easily.
Does deep litter keep chickens warm in winter?
Deep litter adds some warmth because the bedding generates mild heat as microbes break it down, and a thick, dry layer insulates the floor. It is not a substitute for a draft-free, well-ventilated coop.
Why does my deep litter smell like ammonia?
An ammonia smell means the litter is too wet or has too much nitrogen from manure compared to carbon bedding. Add dry carbon material, stir it in, move waterers off the litter, and increase ventilation.
Can you use the deep litter method on a wood floor?
Yes, if the wood is protected. Cover plywood with a single sheet of vinyl flooring that runs a few inches up the walls, or seal it with several coats of exterior paint, and keep the litter from staying wet.
Sources
- University of Kentucky Cooperative Extension Service: Composting Poultry Litter in your Backyard, ASC-242
- University of Illinois Extension: How to care for backyard chickens in winter
- University of Maryland Extension: Winter Weather and Small Flocks, What You Need to Know
Plan a Coop That Makes Deep Litter Easy
Deep litter works best in a roomy, well-ventilated walk-in coop with a protected floor and a tall door threshold. Browse our chicken coop plans to find a layout that makes turning, topping up, and cleaning out simple, and pair it with our guide on how to winterize a chicken coop.
