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You can compost dog waste, but not in the pile that feeds your vegetable garden. Dog feces can carry Toxocara canis roundworm eggs, Giardia, hookworm and Salmonella, and backyard piles rarely reach and hold the temperature needed to destroy them — the US Composting Council standard is 131°F for 15 consecutive days with at least five turnings. The workable approach is a dedicated bin, kept entirely separate, with the output used only on ornamental beds, never on anything you eat.
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Why is dog waste treated differently from cow or chicken manure?
Diet and parasites. Herbivore manure comes from animals whose gut pathogens are largely not adapted to humans, and it has been used as a soil amendment for millennia. Carnivore and omnivore waste — dog, cat, pig and human — carries a much higher risk of organisms that infect people. Toxocara canis is the specific problem: its eggs have a thick protective shell, resist freezing and drying, remain viable in soil for years, and are not reliably destroyed by the temperatures a backyard pile reaches. Cat waste adds Toxoplasma gondii, which is why the advice for cat litter is stricter still and why pregnant women are told to avoid it entirely.
How do you do it properly if you want to?
The USDA Natural Resources Conservation Service published a practical dog waste composting guide out of its Alaska office that remains the most useful US reference for homeowners. The method, in outline:
- A dedicated bin, clearly labeled, sited away from vegetable beds, wells, and any drainage path to surface water. Keep at least 100 feet from a well or waterway.
- Roughly 2 parts carbon to 1 part waste by volume — sawdust is the standard carbon source, and untreated wood shavings, shredded leaves or straw also work.
- Moisture at the wrung-out-sponge level, covered against rain so nothing leaches.
- A long-stem thermometer, used. Aim to hold 140°F or above; turn when it drops.
- Long curing — a year is the commonly recommended minimum before the material is used anywhere.
- Ornamental use only. Trees, shrubs, lawns and flower beds. Never vegetables, herbs, or berries, and never anywhere a child plays in the soil.
- Gloves, and hand washing. Do not handle it barefoot or bare-handed.
Realistically, most households will not sustain the turning discipline that gets a small bin to 140°F repeatedly. If you are not going to keep a thermometer in it, choose a different option below.
What are the alternatives?
| Option | How it works | Notes |
|---|---|---|
| Flush it | Into a municipal sewer, which is designed to treat it | EPA-endorsed where sewered. Not for septic systems. Bag must be sewer-safe or none at all |
| Trash it | Bagged into household waste | Legal and standard in most of the US; check local rules |
| In-ground digester | A lidded chamber sunk in the yard; waste breaks down and leaches into subsoil | $40–$100. Needs well-drained soil, away from wells, waterways and vegetable beds |
| Dedicated compost bin | As above, with a thermometer and a year of curing | Output for ornamentals only |
| Municipal pet waste program | Industrial composting at controlled temperatures | Only where your city explicitly accepts it |
| Bokashi, then bury deep | Anaerobic fermentation, then burial away from food crops | Fermentation is not pathogen kill — treat the output as raw |
What if some got into the main compost pile?
Do not panic and do not use the batch on food crops. The pragmatic response is to let that batch run hot, turn it thoroughly and repeatedly, cure it for a full year, and then use it on ornamental beds, lawn topdressing or around trees. Start a new pile for anything destined for the vegetable garden. Wash hands after handling, and keep the old batch away from areas where children dig.
One further point worth stating plainly, because it is the actual public health issue: picking waste up at all matters more than what you do with it afterward. Pet waste left on the ground is a recognized contributor to bacterial loading in urban stormwater, which is why so many US municipalities run scoop ordinances and campaigns.
Related: how you know when compost is finished, how long compost takes to break down, and why compost is not heating up — because temperature is the whole question here. For the bins themselves, see best compost bin.