Walk the gate line of a twenty-run boarding kennel at the end of a busy Saturday. The fibres are dry to the touch, matted flat where dogs turn, and the air above the surface is sharp enough to reach the office. Operators blame the yarn. The chemistry says something different.
On our line we test drainage on every batch, and the pattern is consistent: odour complaints follow the system, not the fibre. Urea from urine breaks down inside the turf unless water carries it out, and in over 80% of odour cases the root cause is poor drainage. A facility that buys turf rolls without a drainage figure and a stated test method is buying the complaint.
Drainage Rate in Litres Per Minute
Drainage rate is the first line of any artificial grass for dog daycare specification, and it is usually the least examined. Two units dominate the market, and they are not the same language. A facility target in litres per minute per square metre cannot be compared with a data sheet quoted in inches per hour until someone converts.
The conversion is arithmetic: 1 in/hr is approximately 0.42 L/m2/min. That single line puts a product data sheet and a facility target into one unit, which is the entire point of a threshold. A rate without a stated test method is a claim, not a specification.
Our position is blunt: a drainage figure published without its test method should be rejected on any artificial turf installation, however impressive the number looks.
| Unit on the data sheet | Where it usually comes from | What it decides, and the trap |
|---|---|---|
| L/m2/min | Facility drainage targets and drainage-rate guides | Average pet turf sits at 40 to 60 L/m2/min, with high-use surfaces reaching 90; easy to compare once the test method is named. |
| in/hr | Pet-turf product literature | Well-designed pet turf often lists 250 to 400 inches per hour or higher, while some landscape products list only 30 to 60; values below roughly 50 are inadequate for high use. |
| in/hr across the whole panel | Fully permeable system tests | A fully permeable panel flows well over 30 inches of water per hour across its entire face, not only at perforated points. |
| Conversion between the two | Arithmetic | 1 in/hr is approximately 0.42 L/m2/min, so a buyer can hold a data sheet and a facility target in one unit. |
Water leaves through the backing before it ever reaches the base, so the score printed on the roll is only half the story. The artificial grass backing sets how fast the panel passes water, and what goes under artificial grass sets where that water goes next.
A buyer who fixes only the top layer is optimising half of a system, and the half that fails first is rarely the visible one.
Why Odour Is a System Function
Ammonia is a chemistry story, not a fibre story, and for artificial grass for dog daycare it is the complaint that lands hardest on any artificial turf installation. The main cause is urea, a natural waste compound in urine, and as it breaks down it releases ammonia.
The sequence runs in five steps. A dog urinates on the turf. Urea remains inside the turf system, bacteria begin breaking it down, the urea converts into ammonia gas, and the gas reaches the