Have you ever noticed tiny hills of sand popping up between your pavers? Or felt that annoying crunch underfoot when walking on your patio? You might be dealing with ants under your pavers. It’s a common issue for homeowners, and if left unchecked, those little bugs can cause big problems. But don’t worry — tackling this pest problem doesn’t have to be complicated.
Let’s break it down and explore how to deal with ants under pavers in a way that’s effective, simple, and budget-friendly.
Why Ants Love Living Under Pavers
Ants are resourceful and persistent. Your pavers offer them a warm, dry, and protected environment, perfect for building colonies. They love nesting in the sand or loose soil between and beneath pavers because it’s easy to dig through.
One ant colony can house thousands of ants, and once they settle in, they don’t leave easily. According to the University of California’s Integrated Pest Management Program, pavement ants commonly build nests under sidewalks, driveways, and patios — and they can travel several feet from the nest in search of food.
Fun fact: Ants can lift objects 10 to 50 times their body weight. No wonder they’re great at digging up your paver base!
Signs You Have Ants Under Pavers
Before you start treating the problem, you need to confirm you have one. Look out for these common signs:
- Loose or uneven pavers
- Tiny sand piles or “ant hills” between paver joints
- Trails of ants moving in and out of the cracks
- Weak spots when walking on the surface
If you’ve noticed any of these, it’s time to take action.
How to Deal with Ants Under Pavers: Step-by-Step
1. Flush Them Out With Soapy Water
A quick fix to start with is pouring a mixture of dish soap and water into the cracks and holes. The soap breaks down the ants’ outer layer and suffocates them. It’s not a long-term solution, but it can help reduce the population immediately.
How to do it:
Mix one tablespoon of dish soap with a quart of warm water. Pour it slowly into visible ant holes or cracks between pavers.
2. Use an Ant Bait That Targets the Whole Colony
Ant baits work by attracting ants to a poisoned food source. The workers carry it back to the nest, feeding the queen and the rest of the colony. Over time, the entire colony collapses.
Tip: Use slow-acting baits with borax or abamectin. Place them along the ant trails but away from kids and pets.
3. Re-Sand the Joints With Polymeric Sand
If your pavers were installed with regular sand, ants will easily dig through it. Replacing it with polymeric sand can help stop them.
Polymeric sand hardens when moistened and creates a solid barrier. Ants won’t be able to dig through it, and it also prevents weeds.
Steps:
- Remove old joint sand and clean the gaps
- Pour polymeric sand and sweep it into joints
- Compact the surface, then gently mist with water
- Let it dry for 24–48 hours for full hardening
4. Apply Outdoor Ant Killer or Diatomaceous Earth
For stubborn infestations, you can use an outdoor-grade ant insecticide (look for non-toxic options if you have pets). A more natural choice is diatomaceous earth — a powder made from fossilized algae. It damages ants’ exoskeletons and kills them without chemicals.
Sprinkle it around the edges of your paved area, especially where trails or holes appear.
5. Seal Cracks and Gaps
After treatment, it’s a good idea to seal up cracks and prevent new colonies. You can use a joint stabilizing sealer over the pavers, which protects the surface, keeps the joints firm, and stops moisture buildup that attracts ants.
Preventing Ants From Coming Back
Once you’ve learned how to deal with ants under pavers, keeping them away is the next step. Here’s what helps:
- Keep food and trash away from outdoor paved areas
- Regularly sweep and inspect your pavers for new trails or nests
- Repair broken pavers or loose edges that invite ants in
- Use essential oils like peppermint or citrus as natural repellents
- Reseal joints annually if needed
Staying on top of maintenance goes a long way in preventing ants from taking over again.
Final Thoughts: Don’t Let Ants Ruin Your Pavers
Ants under pavers can be more than just a nuisance — they can cause structural damage over time. But now that you know how to deal with ants under pavers using these straightforward methods, you’re already ahead of the game.
Whether you go with bait, polymeric sand, or natural deterrents, the key is to be consistent and proactive. With a little effort, your patio or walkway will stay clean, level, and ant-free.
Got a tricky yard pest or patio repair question? Stick around for more helpful home tips, or check out expert-backed advice from resources like PestWorld.