Best Way to Dispose of Dog Poop — Every Method Ranked

The EPA recommends this method — and the logic is hard to argue with. Municipal wastewater treatment systems are specifically designed to process biological waste, neutralizing the pathogens in dog feces the same way they handle human sewage. When you flush dog waste, it gets treated. When it goes in a bag to a landfill, it doesn't.

Flushing eliminates the plastic bag entirely, removes the landfill contribution, and routes biological material through infrastructure built to handle it. There is no simpler, more effective, or more complete solution.

The catch: you need a way to get the waste from outside to the toilet without a bag — and your local wastewater system must permit it. Most modern municipal systems do. Septic systems and older combined sewer systems may not. Check with your local water authority first.

An in-ground digester is essentially a small septic system for pet waste, installed in your backyard. You drop waste in, add water and enzyme activator, and microbial activity breaks the waste down underground — where it leaches harmlessly into the soil without reaching the water table (when properly sited).

This is a genuinely good option for homeowners with a yard, producing no landfill waste and no plastic bags. The limitations: it requires a permanent backyard installation, it doesn't work well in cold climates during winter months, and it only handles waste from your own property — not waste collected during walks.

Some municipalities have begun accepting pet waste in dedicated composting programs — typically using industrial facilities that operate at the high temperatures needed to neutralize pathogens. Where these programs exist, they represent an excellent option: biological waste gets treated, and no plastic is required.

The limitation is availability. Most cities and counties do not yet have pet waste composting programs. If yours does, consider yourself fortunate — and use it.

Compostable bags certified to ASTM D6400 or BPI standards are designed to break down in industrial composting conditions within 90–180 days. If you have access to a municipal composting program that accepts pet waste and compostable bags, this combination works as intended.

The problem: in most places, even certified compostable bags end up in landfills — where they don't compost. Without the right disposal infrastructure, a compostable bag is effectively indistinguishable from a standard plastic bag in terms of real-world outcomes. This method ranks #4 only because the combination with proper industrial composting is genuinely better — but that combination is rare.

Biodegradable bags are widely marketed as the eco-friendly upgrade from standard plastic. The reality is more complicated. Most biodegradable bags require oxygen, sunlight, moisture, and microbial activity to break down — conditions that don't exist in a landfill. A biodegradable bag that ends up in a landfill may persist for years or decades without meaningful breakdown.

Picking up is still better than leaving waste on the ground. But paying a premium for biodegradable bags that end up in a landfill offers little environmental advantage over the cheaper option below. The marketing is ahead of the science.

This is what most dog owners do. A standard HDPE or LDPE plastic bag, used once, tied, placed in a trash can or dumpster, transported to a landfill. The waste is contained — which prevents it from washing into waterways — but neither the plastic bag nor the biological waste inside it is ever treated. The bag will persist in the landfill for hundreds of years.

This method ranks above leaving waste on the ground because containment matters. But at 82 billion bags per year across North America, this is the option with the largest cumulative environmental footprint. It is the status quo — and the status quo has a problem.

The worst option — and in most places, the illegal one. Dog waste left on the ground breaks down and washes into the water supply during rain events, carrying bacteria, parasites, and nutrients into the same waterways people swim in, fish from, and drink from. The EPA estimates that just 2–3 days of waste from 100 dogs can temporarily close an entire bay to swimming and fishing within 25 miles.

Beyond the water quality impact, untreated dog waste in public spaces poses direct public health risks, creates unpleasant conditions in parks and neighborhoods, and erodes the social trust that allows dogs to remain welcome in shared spaces. Pick up. Always.