Dog feces should not go in a home compost bin, even if the compost reaches high temperatures
Home compost piles do not get hot enough or stay hot long enough to kill the parasites and pathogens that live in dog waste. A standard backyard compost bin reaches 130 to 150 degrees Fahrenheit in the active phase, but it needs to hold 165 degrees for several days to neutralize the harmful organisms in feces. Most home systems never reach that temperature, and even when they do, the heat is uneven—some material stays cool while other material burns hot.
The real danger is that dog waste carries roundworms, hookworms, whipworms, and Giardia—parasites that survive in soil and can infect humans and other animals. If you use that compost on a vegetable garden, you risk contaminating the food you eat. If you use it on a lawn where children or other pets play, you create a transmission route. These parasites can survive in soil for years.
The U.S. Environmental Protection Agency and the Composting Council both recommend against composting pet feces in home systems. Commercial composting facilities that reach and maintain 165 degrees for the required time can process it safely, but those facilities are not available in most areas.
Key Takeaways
- Home compost piles do not reach the temperature needed to kill parasites and pathogens in dog waste.
- Dog feces can carry roundworms, hookworms, whipworms, and Giardia, which survive in soil and infect humans and animals.
- Using contaminated compost on vegetable gardens or play areas spreads parasites to people and pets.
- Only commercial composting facilities with verified temperature control can safely process pet waste.
- The safest disposal method is to bag dog waste and place it in the trash, or flush it if your septic system allows it.
What parasites and pathogens live in dog feces
Dog waste is a host for several organisms that cause illness in humans and animals. Roundworms (Toxocara canis) are the most common—they shed eggs in feces that can survive in soil for years and cause intestinal infection or, rarely, eye damage in humans. Hookworms penetrate the skin and cause anemia and intestinal problems. Whipworms cause chronic diarrhea and weight loss.
Giardia is a protozoan parasite that causes severe diarrhea and is easily transmitted through contaminated water or soil. E. coli and Salmonella bacteria also live in dog feces and can cause food poisoning if they reach vegetables or surfaces where food is prepared. A dog does not need to show symptoms of illness to shed these organisms—many infected dogs are asymptomatic carriers.
Why home compost temperatures are not high enough
Composting works by creating conditions where microorganisms break down organic matter. Heat is a byproduct of that microbial activity, not the primary driver. A well-maintained hot compost pile—one with the right ratio of carbon (brown material like leaves and paper) to nitrogen (green material like grass clippings and food scraps)—reaches 130 to 150 degrees Fahrenheit during the active decomposition phase.
To kill parasites and pathogens, the EPA requires sustained heat of 165 degrees Fahrenheit for at least 15 minutes throughout the entire pile. Home systems rarely achieve this because the heat is concentrated in the center of the pile while the edges stay much cooler. Even if you turn the pile regularly to redistribute heat, you cannot may provide that every part of it reaches 165 degrees for the required time. Commercial facilities use thermometers, mechanical turning equipment, and moisture control to maintain precise temperatures—home gardeners do not have those tools.
Safe alternatives for disposing of dog waste
The simplest method is to bag the waste in a biodegradable or regular plastic bag and place it in your household trash. The waste goes to a landfill where it is buried and isolated from soil and groundwater. This is safe and requires no special equipment.
If you have a septic system, you can flush dog waste down the toilet, but only if your system is designed to handle it. Check your septic system manual or call the company that installed it before you start flushing. Some systems are sensitive to the volume or type of waste and flushing can damage them. If you have a municipal sewer system (not a septic tank), flushing is safe and is actually the method recommended by some veterinarians and waste management agencies.
A third option is to bury dog waste in a designated area of your yard, away from vegetable gardens and water sources. Dig a hole at least 6 inches deep and at least 200 feet from any well or surface water. Bury the waste and cover it with soil. This works only if you have space and if your local regulations allow it—some municipalities prohibit burying pet waste.
What about commercial pet waste composting services
Some areas have commercial composting facilities that accept pet waste. These facilities maintain temperatures above 165 degrees and monitor the process to may support pathogens are killed. If you have access to one, it is a safe option. You can search for "pet waste composting near me" or contact your local waste management authority to see if a facility operates in your area.
These services are not widely available, and many require you to deliver the waste yourself or pay a subscription fee for pickup. They are more expensive than bagging and trashing, but they keep waste out of landfills and produce compost that is safe to use on ornamental plants (not food crops, as an extra precaution).
Can you compost cat litter or other pet waste
Cat litter should not go in home compost for the same reason as dog waste: it carries parasites, particularly Toxoplasma gondii, which is dangerous to pregnant women and people with weakened immune systems. Even clumping litters made from clay or plant material do not break down safely in home compost.
Other pet waste—from rabbits, guinea pigs, hamsters, and birds—is generally safer than dog or cat waste because these animals carry fewer parasites that infect humans. However, it is still wise to compost it separately from food-garden compost or to use a hot composting method if you include it. When in doubt, bag it and trash it.
Frequently Asked Questions
What if my dog is on parasite medication—is the waste safe to compost then?
No. Parasite medication kills the organisms in your dog's body, but it does not sterilize the waste. Eggs and cysts can still be present, and medication does not change the fact that home compost does not reach the required temperature. The waste is still unsafe.
Can I compost dog waste if I never use the compost on food?
It is still not recommended. Even if you use the compost only on ornamental plants or lawns, parasites can spread to people and pets through contact with soil. Children playing in a yard, barefoot gardening, or touching your face after handling contaminated compost are all transmission routes.
Is there a way to make home compost hot enough to kill parasites?
Not reliably. You can improve your compost temperature by using a larger bin, maintaining the right carbon-to-nitrogen ratio, and turning the pile frequently, but you cannot monitor internal temperature without a compost thermometer, and even then you cannot may provide uniform heat throughout. The risk is too high to justify the effort.
What happens if I accidentally compost dog waste and use it on my garden?
You may not get sick, but you have created a contamination risk. Wash all vegetables thoroughly before eating them, and wash your hands after gardening. If you or anyone in your household develops unexplained diarrhea, abdominal pain, or skin rashes after using the compost, mention to a doctor that you may have been exposed to parasites from pet waste.
Can I add dog waste to a worm bin or vermicompost?
No. Worm bins operate at much lower temperatures than hot compost piles and are not suitable for any pet waste. The parasites will survive and the worms themselves can become infected and die.