Pet turf and dog runs that drain fast and stay clean.

Why does pet turf start to smell?

Dog urine isn’t the problem on its own. Urine that stays put is. When it can’t pass through the backing and drain out of the base, it breaks down where it sits, and on a warm afternoon the whole run smells like it.

Three layers decide whether it drains:

• The backing. Some turf backings are punched with drain holes; others let liquid through across the whole sheet. Either way, the backing is the first thing urine has to get past.
• The base. Under the backing, a compacted crushed-rock base lets liquid move down and away. Packed dirt holds it.
• The ground under that. Clay takes water in slowly. The Colorado Geological Survey lists poor surface drainage among the landscaping problems on expansive soils, so the ground under a dog run is shaped to send liquid toward a low point, never toward the house.

Get those right and the same yard that turned to mud after every storm stays usable, because the water goes down through the base instead of sitting on top.

What goes into a dog run that drains?

The same layers as a lawn, chosen for what a dog does to them.

1. Grade. The ground is shaped so the run sheds water away from the house and toward somewhere it can go.
2. Base. Crushed rock, compacted flat, so liquid passes through it and the surface doesn’t dip where the dogs turn.
3. Turf. Backing that drains, and blades that stand back up after running and wrestling.
4. Infill. Something that drains and doesn’t hold odor, deep enough that claws don’t reach the backing.
5. Edges. Secured along the fence, the gate and every hard edge, where dogs turn hardest and diggers start.
6. A hose within reach. Rinsing is part of owning pet turf. Plan where the water comes from before the turf goes down.

How hot does turf get for paws in a Northern Colorado summer?

Hotter than grass in direct sun, and worth planning for. NOAA’s 1991–2020 normals show how much summer heat varies along the corridor: the Greeley UNC station averages 58.3 days a year at or above 90°F, while the Fort Collins station averages 29.5.

What helps:

• Shade. A tree, a shade sail or the north side of the house over part of the run gives dogs somewhere cooler to lie down.
• Water. A hose-down cools the surface quickly, and it doubles as the rinse.
• Windows. Sunlight reflected off some windows can concentrate on turf and damage it. Look at where the house throws glare in the afternoon before choosing the spot.

What can your HOA or town say about a dog run?

Your HOA. Colorado law says an HOA’s landscaping rules may not prohibit artificial turf in the backyard of a detached single-family home, although the HOA can still adopt design and aesthetic guidelines. Colorado law also makes unenforceable any HOA covenant or special-district rule that prohibits artificial turf in the backyard of a residential property, except for attached homes and timeshare associations. On an attached home that shares a wall, the HOA may restrict artificial turf to rear yards.

Firestone. The town requires a permit before artificial turf is installed, with no fee for single-family homes. It limits artificial turf on single-family lots to 75% of the rear or side yard and requires at least 25% of the yard to stay permeable living or organic landscape. It also requires half of the combined side and rear yards to be live plants, which turf can’t count toward, so a whole-backyard dog yard there is planned around that.

The turf itself. Since January 1, 2026, Colorado law bars anyone from installing artificial turf that contains intentionally added PFAS chemicals. Ask for the product’s documentation before you sign.

More in how HOA approval works and the town-by-town turf rules.