How to Stop Ant Hills from Taking Over Your Lawn

You thought you’d have your lush green lawn to yourself this summer. But here you are, facing down a row of ant hills. 

It starts with one innocent-looking mound that you ignore. 

Then another. 

And another…

These hills aren’t just an inconvenience; they could be the first sign of something more serious.

Photo credits to pexels.com

Let’s shut it down before your lawn turns into an ant colony empire.

But First, Why Are Ant Hills Popping Up All of a Sudden?

This is completely normal. As temperatures rise in the summer, ant colonies kick into high gear. They send out worker ants to forage, dig, and expand into.

Your yard just happens to check all their boxes:

• Soft, dry soil? Check.

• Sunny, undisturbed corners? Yep.

• Easy access to crumbs, moisture, and shelter? Jackpot.

What you’re seeing above ground is just the construction debris. Below that? A complex network of tunnels, chambers, and possibly thousands of ants working around the clock. 

These hills aren’t random. They’re the tip of a much bigger (and itchier) iceberg.

Here’s what they’re actually doing:

• Damaging your grass. Ants loosen the soil around roots, creating dry, patchy areas and soft spots where healthy turf should be.
• Creating trip hazards. Especially around walkways and driveways, where loose soil can shift underfoot or catch mower blades.
• Setting up shop near your home. Ants nesting close to garages, patios, or foundations can, and often will, find their way indoors.
• Some species split off and start satellite colonies (pavement ants and carpenter ants). Given the chance, they will. More hills. More ants. More problems.

How to Shut Down Ant Hills

Here’s how to make your lawn a whole lot less ant-friendly:

Remove Their Advantages

• Keep your grass short and tidy. Overgrown turf provides shade and protection for ant tunnels. Mowing regularly removes their cover and makes the environment less appealing.
• Rake and clear debris often. Leaves, twigs, and even dense mulch create cosy spots for ants to build under. A clean lawn is a less attractive nesting ground.
• Fix drainage problems. Ants love slightly moist, compact soil. If you’ve got puddles or soggy low spots, aerate and regrade where needed to dry things out.
• Keep food off the lawn. Pet dishes, crumbs from snacks, and even BBQ drippings can draw foraging ants from across the yard.
• Edge and trim around trees, fences, and garden beds. Ants often start colonies in these overlooked transition zones, where mowing doesn’t quite reach.
• Dethatch your lawn in spring. A thick thatch layer traps moisture and creates ideal nesting zones just below the surface. Removing it gives ants fewer places to hide.
• Limit mulch depth around garden beds. Deep mulch retains heat and moisture, which is perfect for ants. Stick to a 2-inch layer and avoid piling it against structures.
• Keep compost bins sealed and elevated. Compost is a buffet of crumbs and warmth. Use bins with tight lids and place them on bricks or pavers to limit ground contact.

Watch the Perimeter

• Check for trails and hills around garage doors, foundations, and fence lines. Ants love to build along the edges where soil meets structure.
• Seal cracks and crevices. Caulk small gaps along the foundation, driveway, and patio stones to block entry points. If they can’t get in, they can’t take over.
• Inspect pavers, bricks, and sidewalk gaps. Loose or lifted hardscaping can shelter entire colonies underneath. Reset any problem areas and sweep sand or gravel into cracks.
• Look under planters, woodpiles, and outdoor storage. These shaded zones are ant magnets. If you find activity, clean them out and relocate when possible.
• Install gravel or stone borders. Ants dislike coarse materials. Creating a gravel buffer between lawn and hardscape makes nesting more difficult along high-traffic edges.
• Use ant bait stations around hot spots. If you spot trails along your foundation or patio, discreet bait traps can interrupt foraging and bring control to the source.
• Check outdoor rugs and welcome mats. These often-overlooked areas trap moisture and provide cover. Shake them out weekly and store rolled up when not in use.
• Inspect hose reels and garden tool storage. Ants love tucked-away spots with warmth and condensation. Clean and declutter storage areas regularly.
• Monitor irrigation boxes and sprinkler heads. Ants often tunnel around plastic housings in the soil. A quick lift and inspection can reveal early nesting attempts.

Get Professional Ant Control

Here’s the thing: keeping your area clean and tidy is good and all, but if you have a persistent or severe infestation, you’re going to need professional exterminators. 

Our technicians know where ants build, how they move, and most importantly, how to shut down the colony at the source. We don’t just treat the visible mounds; we target the tunnels, the queen, and the entire structure of the colony.

Here are your options:

• BuzzShield® Insect provides targeted seasonal treatments for ants, including other summer pests like mosquitoes, ticks, and spiders.
• BuzzShield® Complete offers year-round protection, ideal if ant problems tend to return every season.

All our treatments are designed to be effective, low-impact, and safe when applied correctly. No residue, no strong odours, and no risk to pets or pollinators.

Best of all? You don’t have to guess what’s working or not. We assess, apply, and monitor, so you can enjoy your lawn without playing backyard pest control on your day off.

What Doesn’t Work (and Might Make It Worse)

When ant hills start popping up, it’s tempting to head straight to Google and pour whatever’s under the kitchen sink onto the problem. But most DIY ant fixes don’t work, and some actually make things worse.

• Boiling water, baking soda, vinegar, and essential oils might look satisfying in the moment, but they only affect surface-level ants. The queen? Still alive and well, a few feet underground, running the show like a subterranean general.
• Surface ant control sprays are the same deal. You might kill a few worker ants, but unless you hit the colony’s core, they’ll just regroup and rebuild, often a few feet away, sometimes in your basement. Also, they contain a lot of chemicals that can be harmful. So if you have young kids and pets, you need to be extra careful about exposure and ventilation. 
• Home remedies can drive ants deeper. Some substances alert the colony, causing it to retreat further underground, even worse, split off to form multiple nests.
• You risk damaging your lawn. Harsh solutions like vinegar or detergent can burn grass and disrupt your soil’s health.
• Pets and kids are at risk. Many over-the-counter or homemade treatments aren’t safe for paws or little hands if not used correctly.

Make Your Lawn a No-Ant Zone

If mounds are popping up faster than weeds, it’s time to call in Buzz Boss. We’ll handle the nests, the queens, and the chaos, so you can go back to enjoying your lawn (without worrying about what’s tunnelling underneath).

Whether you’re in Calgary, Edmonton, Red Deer, Regina, Saskatoon, or Winnipeg, we’ve got your yard covered.