How to disinfect artificial grass: clean first, then sanitize

Turf that has not been cleaned recently carries a thin layer of pollen, dust and decomposed leaf litter over the infill. Bacteria live in that layer and in the infill under it, fed by urine residue and organic matter. A sanitizer sprayed on top wets the layer and is used up by it; very little reaches the infill, and what does is diluted by the dirt it passed through. Blowing removes the loose debris, brushing lifts the layer out of the fibers, and rinsing carries it down and out. After that, a sanitizer touches what it is meant to touch. This sequence is most of what you are paying for in a professional visit, and it costs nothing to follow at home.

• Quaternary-ammonium sanitizers labeled for artificial turf, kennels or pet surfaces. The most common category. Non-bleaching, low odor, effective on the bacteria behind pet smells. Keep dogs off until dry.
• Hydrogen-peroxide-based oxidizers labeled for outdoor synthetic surfaces. Break down to water and oxygen, and also knock back early algae. Rinse if the label says.
• Enzyme cleaners are not disinfectants, but they remove the residue bacteria feed on, which is why they come first in a pet yard.
• Diluted white vinegar is a weak option for a light surface refresh and nothing more.

A label that says it kills 99.9 percent of germs was tested on a hard, non-porous surface. Turf is neither. Expect less, and rely on dwell time and coverage rather than the number.

• Chlorine bleach. Lightens fibers, degrades the backing with repeated use, kills border plants and goes down the storm drain to the creek.
• Pine-oil and phenolic disinfectants. Toxic to cats and dogs at the residue level, and the solvent carrier softens polyethylene.
• Anything sold "with bleach". Same problem in a different bottle.
• Undiluted quats. Irritate paws and foam in the drainage. Label dilution, always.
• Two products at once. Quat plus bleach, vinegar plus bleach, and enzyme plus sanitizer all cancel or react. One product, then rinse, then the next if needed.

1. Pick an evening with no rain expected overnight.
2. Blow off debris, brush against the grain, and rinse the whole area with the hose on a shower setting.
3. Let it drain fifteen minutes so the turf is damp, not flooded. Standing water dilutes the sanitizer.
4. Mix the product at label dilution in a pump sprayer.
5. Apply evenly, enough to wet the fibers down to the infill, not just mist the tips.
6. Leave it wet for the full label dwell time, usually about ten minutes. Mist again if it starts to dry.
7. Rinse only if the label says to. Most turf-labeled products are left on.
8. Keep pets and children off until the turf is fully dry.

After a dog has been sick, especially with anything contagious; ask the vet which products are rated for that organism, because general turf sanitizers are not all rated for the tough ones. On a daycare or vacation-rental yard at turnover. On play areas after a party or a summer of heavy use. After a storm surge or flood, when what came in with the water is unknown. And as routine, once after each deep clean, which on the coast means two to four times a year. Sanitizing every week does nothing extra; the bacteria return as soon as the residue does, so the residue is the thing to manage.

If the yard has not had a real clean in a year, or smells on humid mornings, the sanitizer is the last step of a job that starts with a power brush and a high-volume flush. Our antimicrobial treatment is included in every Premium Restoration, from $299 for up to 500 square feet, and available as a stand-alone add-on at $75 to $125 on any visit. In a pet yard it follows the enzyme odor treatment, in that order, for the reason above. The DIY mistakes guide covers the household products we get called to undo.