Infill is the granular material brushed down into the fibers of an artificial lawn, and it quietly determines how the turf feels, drains, cools, and smells. Choosing the wrong infill can undo an otherwise great installation. This guide ranks the common infill types by what they do best, so you can match the material to your yard's real needs.
What Infill Actually Does
Infill is not just filler. It weights the turf down so it lies flat, supports the fibers so they stand upright, protects the backing from UV and traffic, and in many cases manages temperature and odor. A lawn without adequate infill mats down faster and feels flimsy. Because different infills prioritize different jobs, the best choice depends on whether you care most about cost, cooling, or cleanliness.
The Main Infill Types
Silica Sand
Rounded silica sand is the workhorse and the value leader. It weights the turf, supports the blades, and drains well, all at a low cost. Its limits are that it offers no odor control on its own and does little to reduce surface heat. For general lawns with light pet use, it remains a sensible, economical default.
Coated and Antimicrobial Sands
These are silica or similar sands coated to resist bacteria and, in some cases, to reduce heat. The antimicrobial coating helps control the odor that plagues pet areas, making these a strong choice where dogs live. They cost more than plain sand but earn it in pet applications.
Mineral-Based Infills
Certain porous mineral granules are prized for their ability to absorb and neutralize ammonia, the main source of pet urine odor. They can also hold moisture that helps cool the surface as it evaporates. These infills shine in dedicated pet areas where odor control is the top priority.
Organic and Alternative Infills
Some infills use plant-derived materials marketed for a cooler, more natural surface. Performance varies, and they can require more attention over time, so weigh their claims against your maintenance appetite.
Ranked by Job
| Priority | Best Infill | Runner-Up |
|---|---|---|
| Lowest cost | Silica sand | Basic coated sand |
| Odor control | Mineral/zeolite | Antimicrobial coated |
| Pet areas | Antimicrobial coated | Mineral/zeolite |
| Cooling | Moisture-holding mineral | Light-colored coated |
| Play areas | Rounded, non-abrasive | Antimicrobial coated |
No single infill wins every category, which is exactly why the right pick depends on your use case rather than a universal ranking.
Matching Infill to Your Space
- General family lawn: rounded silica sand offers the best value and solid performance.
- Dog areas: an antimicrobial or mineral infill controls odor far better than plain sand.
- Full sun: a lighter-colored or moisture-holding infill helps keep the surface cooler.
- Playgrounds: rounded, non-abrasive granules that are gentle on skin.
Quantity matters as much as type. The right amount of infill, applied at the correct depth and brushed in evenly, is what makes it perform. Too little and the fibers mat; too much and it can migrate to the surface. This balance is part of what we get right during installation, detailed in our services.
Maintenance and Refreshing Infill
Infill is not entirely permanent. Foot traffic, heavy rain, and cleaning can displace it over the years, so periodically topping up and re-brushing keeps the lawn performing like new. Pet-area infills especially benefit from occasional refreshing to maintain odor control. A quick annual check and a bag of infill are usually all it takes to keep the surface supported and fresh.
Frequently Asked Questions
Do I really need infill in my artificial grass?
For most installations, yes. Infill weights the turf flat, supports the fibers so they resist matting, and protects the backing. Some short, dense products can go without it, but the majority of lawns look and last better with the right infill in place.
Which infill is best for controlling pet odor?
Mineral-based infills that neutralize ammonia and antimicrobial-coated sands are the strongest performers for pet odor. Paired with fast drainage and regular rinsing, they keep dog areas far fresher than plain silica sand can on its own.
How often should infill be replaced?
You rarely replace it entirely; you top it up. Depending on traffic and weather, refreshing infill every year or two keeps the fibers supported and, in pet areas, keeps odor control effective. A simple annual inspection tells you when it is time.
Get a Free Quote
The right infill makes a good lawn great. Our team recommends and installs the ideal infill for your use, whether that is pets, play, or full sun. Get a free quote or call 877-692-5349 to talk through your options.