How to get rid of dog poop and pee smell in your yard

A yard that smells like dog usually has one thing going on: waste that's still sitting in it. No spray can out-work a pile nobody picked up. Here's where the smell comes from, what clears it, and what to leave on the shelf.

Why does my yard smell like dog pee and poop?

Because something out there is still breaking down. Urine turns into ammonia, and piles keep smelling, and drawing flies, until they're gone.

Urine carries nitrogen as urea. Bacteria that live in soil and in feces make an enzyme called urease that splits urea into ammonia, and heat speeds the reaction up, according to Ohio State University Extension. That helps explain why a pee spot smells sharper on a July afternoon. The Washington State Department of Health lists urine as a source of ammonia, and Washington State University's lawn guide notes that grass damaged by dog urine gives off ammonia you can smell.

Poop is the other half. The University of California's pest management program says removing dog feces and other organic waste at least once a week makes a yard less attractive to flies and takes away their breeding sites. It adds that house flies can pick up disease agents while feeding on animal feces (UC IPM).

Favorite spots get it worst. Dogs go back to their marks to renew them, and they tend to mark where other dogs already have, according to a UC Davis veterinary behavior handout. So one corner can get dosed every day while the rest of the lawn gets a break.

Some Macomb County communities write the smell right into the code. In Sterling Heights (§8-11) and Fraser (§5-11), waste in your own yard can't be left to turn smelly or offensive, and it has to be removed within 24 hours after the city gets a complaint. Center Line (Sec. 10-8) bans keeping an animal in a way that creates an odor nuisance, and the Village of Armada (Sec. 96-6) doesn't let dog waste pile up until it smells or draws insects. Codes change, so check the current version for your community.

What gets rid of dog poop smell in the yard?

Picking up the poop. Nothing else works while the piles are still there, so start with a full sweep.

1. Walk the whole yard. Go in rows, and check the corners, mulch beds and fence line, where piles like to hide.
2. Bag it and seal it. UC IPM advises sealing pet feces in plastic bags before they go into an outdoor trash container. A knotted bag in a lidded can keeps the smell, and the flies, contained. Our guide to disposing of dog poop covers the other options.
3. Stick to a schedule. Weekly is the minimum for fly control, and the CDC's roundworm guidance goes further: pick up pet waste daily. More dogs or hot weather means more trips. Here's how often to pick up dog poop for your yard and pack.
4. Then deal with the pee. With the piles gone, you can tell what's left, and it's usually urine.

How do you get rid of dog urine smell outside?

With water. Soak pee spots on the grass soon after your dog goes, and rinse hard surfaces where urine dries and builds up.

• On grass: Pour a watering can over the spot right after your dog pees. Turf specialists at Purdue and the University of Illinois say this helps minimize serious damage, and Colorado State University Extension calls water the only "product" that can neutralize urine's effects.
• On patios, concrete and gravel runs: Rinse regularly so dried urine doesn't build up. Aim the water at the lawn or a garden bed, not the driveway or street. Macomb County Public Works says pet waste and dirty wash water should never go down a storm drain or into a ditch, because what goes in heads to local lakes and streams.
• On artificial grass: Urine drains into the infill and base, so it needs its own routine. See our guide to cleaning dog poop and pee off artificial turf.
• In a heat wave: Water more often. Heat speeds up the ammonia reaction, and Purdue notes that urine can kill grass in 24 hours or less in hot, dry weather.

Grass that's already brown needs more than a rinse. Our post on dog urine spots on the lawn walks through the repair.

Do enzyme cleaners work on dog urine smell?

They're the cleaner UC Davis's veterinary behavior service recommends for leftover urine scent. Use one after scooping and rinsing, on the spots your dog keeps going back to.

UC Davis's veterinary behavior service tells owners to clean accidents with an enzymatic cleaner to remove leftover smells that draw a dog back to the same place, and its marking handout gives the same advice for residual urine odors. That guidance is written for indoor accidents, but the goal outside is the same: erase the scent that says "go here." Humane World for Animals describes enzymatic cleaners as products that break down pet waste odors.

A few ground rules:

• Scoop first. Enzyme sprays are for residue, not piles.
• Follow the label for mixing and how long to leave it on.
• Keep your dog off until it dries. The ASPCA says most enzyme-based cleaners tend to cause mild stomach upset, so let treated areas dry before pets return.
• Don't expect a germ-free lawn. Deodorizing handles smell. The Companion Animal Parasite Council says roundworm eggs can stay infective in the environment for years and that common disinfectants don't kill them, which is why prompt pickup matters more than any spray.

Our deodorize and sanitize add-on puts this to work. After we scoop, we treat your dog's potty zones with a pet-safe enzyme spray for $8 a visit, on top of any plan. With one dog on weekly service, that's $27 a visit, or about $117 a month. Add it when you get your price.

What should you not put on dog pee spots?

Bleach, ammonia cleaners, vinegar and salty home remedies. Here's why each one misses.

How do you keep the yard from smelling again?

Turn cleanup into a routine instead of a rescue mission.

• Scoop on a schedule: weekly at minimum, and more often with more dogs.
• Water after summer pee breaks, especially on hot afternoons.
• Give your dog one potty zone. Colorado State suggests training dogs to use a mulch or gravel area, and UC Davis's housetraining handout says to take your pup to the same spot every time. One zone means one place to rinse and treat.
• Treat that zone regularly with an enzyme cleaner.
• Keep going in winter. Piles buried in snow are all still there at the thaw, so pick up what's on top after each storm. Here's how to handle scooping in the snow.

Or hand us the whole list. We walk your yard in a grid, double-bag everything into your outdoor trash can, text you a gate-check photo when we leave, and add the enzyme spray if you want it. Missed a spot? Tell us within 24 hours and we come back free.