Why Does Artificial Turf Smell Worse in Summer?
Artificial turf smells worse in July because heat drives ammonia gas out of the urine salts packed into the infill. Rinsing with a hose spreads the salt instead of removing it. Treating the infill with a peroxide-based solution is what breaks the salt down in the base.
Last updated: July 2026
We got a call last week from a house off Pomerado Road in Poway. Two dogs, a north-facing yard, and a smell the owner could catch from the patio door on a 90-degree afternoon.
She had been rinsing it with a garden hose all spring. That is the part people get wrong.
What the heat actually does
Dog urine leaves salt crystals behind after the liquid evaporates. Those crystals sink into the infill, the sand and rubber layer sitting under the blades. When the surface temperature climbs past 120 degrees in direct San Diego sun, the salts off-gas ammonia. That is the smell.
A hose moves water across the top. It does not lift the salt out of a base that sits half an inch to an inch deep. So the odor comes back by the next warm afternoon.
Summer vs winter odor on the same yard
| Factor | Winter | Summer |
|---|---|---|
| Surface temp | 60 to 80 degrees | 120 to 165 degrees |
| Ammonia off-gassing | low | high |
| How fast odor returns after a hose rinse | days | hours |
Same salt load. The heat is the variable.
What we did on the Poway yard
We worked the cleaning solution across the whole yard, down into the infill to break the salt loose. The power broom and power sweep came first to clear the surface, and fresh pet-friendly infill went back in so the base can breathe and drain.
The yard drained on the first test pour. The smell was gone before we packed up. A standard backyard takes about 1.5 hours. This one ran closer to 80 because a year of buildup on a two-dog yard never clears in one pass.
Can you fix it yourself?
You can slow it down. Pick up solids daily, and rinse in the early morning before the surface heats. But a hose will not remove salt that is already in the base. For that you need extraction. We walk through the full method on our turf cleaning services page, and the pet-specific version on our pet turf cleaning in Poway page.
If you have already tried scrubbing and the odor keeps coming back in the heat, that is the salt talking, not the surface. See our guide on removing dog urine smell from turf for the longer version.
We cover Poway, Rancho Bernardo, 4S Ranch, and the rest of the county from one base, so a crew is rarely more than 30 minutes out. We send a written quote after we see the yard.