Skip to content
Free quote Call now
Round Rock, Texas

Ant control in Round Rock, TX.

Round Rock is split down the middle by Brushy Creek, limestone on one bank and blackland clay on the other, and the ants on each side behave like different animals. Our recurring plan covers both from $66 a month. Free re-treatments if a trail returns between visits, whichever bank you sleep on.

Free quote 843-480-8699

Written by the Bastion Pest Control service team · Licensed & insured in Texas · Last updated

Free quote. Instant price.

What are we dealing with?

Tap everything you have seen. Most homes have more than one.

Step 1 of 2 to your price
Which pests are you seeing? Select all that apply.

20 seconds, then you see your price. Or just call 843-480-8699.

No email needed and no obligation. We call back within the hour during service hours, 8am to 8pm.

We have your details. Someone from the Austin team calls you shortly to confirm a time.

Based on what you picked

843-480-8699
Included on every visit
Licensed & insured
Free re-treatments
Phone answered 24/7

The 60-second version for Round Rock

Brushy Creek is the dividing line: rock seams to the west, waterlogged clay to the east. Round Rock's ant answer depends on which side you are reading this from.

Peak season
March through November
West-side sprinklers and east-side storms keep the two halves of Round Rock busy in turn.
Most common
Fire & sugar ants
Fire ants in irrigated turf on both banks of the creek, sugar ants wherever the valve boxes are.
Included in
$66/mo plan*
No ant upcharge, ever.
Why spray fails
Queen survives
Bait is what reaches the colony.
Fire ants
2 - 3 weeks
Granular needs a watering cycle to activate.
Guarantee
Free re-treatments
Trails return between visits? So do we.

Ant control is included in our general pest plan.

One plan covers both banks of Brushy Creek. Ants are built into the recurring general pest service alongside spiders, roaches, scorpions, wasps and rodents, with no separate ant fee on either side. Trails that reappear between visits get a free re-treatment. The starting rate moves with home and lot size, so a Forest Creek ranch and a Teravista two-story may differ, but the coverage does not.

See full pricing details →
General Pest + Rodent
$66*/month

Starting rate for a single-family home in Round Rock. Includes ant control plus free re-treatments between visits.

Ant control in Round Rock: what each option covers, and what it costs.
 General pest planRecurringOne-time treatmentSingle visit
What it is forKeeping ants out of the house year-roundKnocking down one active trail or mound
Right for you ifYou want it handled and kept handledYou are between tenants, or you want to try us once
What you getFull TriBarrier on every visit, on a recurring scheduleOne full TriBarrier treatment
If they come backWe re-treat free, with no limit and no trip feeA return visit is a new charge
Other pests coveredSpiders, cockroaches, scorpions, wasps and rodentsAnts only
PriceFrom $66 a month*Quoted per job*

* Starting price. Your exact number depends on home size, lot size and current pest pressure.

Our approach

How we get rid of ants in Round Rock.

Three steps, every visit, the full TriBarrier treatment. With ants we start with identification and bait, because killing foragers and never reaching the queen is the entire reason ant problems keep coming back.

Bastion Pest Control technician in a blue glove placing an ant bait station on a foundation edge where ants are trailing 1

Identify and bait

We work out the species before a sprayer comes out, then set bait the workers actually want and let them deliver it to the queen themselves. Nothing personal. Just logistics.

Bastion Pest Control technician broadcasting granular ant bait across a lawn with a fire ant mound in the foreground 2

Treat the yard and mounds

A granular broadcast across the lawn plus a direct hit on every mound, and it reactivates every time you water. Congratulations, your sprinkler system is on our payroll now. That is what stops fire ants moving back in between visits.

Bastion Pest Control technician with a backpack sprayer treating the stone foundation perimeter of a Central Texas home 3

Seal the perimeter

A treated band three feet up and three feet out around the foundation, plus weep holes, slab joints, irrigation boxes and utility gaps. Round Rock straddles two soil types, so which gaps matter most depends on your side of Brushy Creek.

Recognize any of these in your Round Rock home?

Free quote, same-day service most days, and free re-treatments if they come back between visits.

Get a free quote 843-480-8699

Why ants keep coming back in Round Rock.

Ant control in Round Rock changes with the soil. West of Brushy Creek, colonies tuck into limestone seams and under landscape stone where surface spray never reaches. Which is why the trail always comes back a few feet over after every DIY attempt, like it is mocking you. It is. East through Teravista, Paloma Lake and Chandler Creek, blackland clay holds rainwater and pushes fire ant colonies up after storms. Heavily irrigated lawns on both sides concentrate fire ants in the maintained turf, and sprinkler and valve boxes are among the most common indoor entry routes we document.

Round Rock sits right on the geological seam. Brushy Creek runs through the middle of town, and the ground shifts from Edwards limestone on the west side: Behrens Ranch, Mayfield Ranch, Vista Oaks, Cat Hollow, to heavier blackland clay on the east through Teravista, Paloma Lake and Chandler Creek. The city's namesake round rock in Brushy Creek is a literal marker of that limestone shelf. Which side you are on determines whether pests are nesting in rock seams or in soil that holds water.

Here's why the bottle from the hardware store keeps letting you down. Spraying a trail is like firing the delivery drivers and expecting the restaurant to close. You got the fifty ants you could see. Congratulations. The queen didn't even look up. About nine in ten ants never leave the nest, so if the treatment doesn't get carried home to her, nothing actually happened. You just rearranged the furniture. Worse, some species panic and split into extra colonies when they taste something repellent, which is how one ant problem gets a promotion to five. Real ant control means naming the species first, baiting so the workers deliver the bad news themselves, then keeping a treated ring the next colony cannot cross. If you want the version with no sales pitch attached, the EPA's integrated pest management principles are a solid read.

Limestone west, clay east

Brushy Creek roughly marks the line. And it changes how pests nest and enter.

Brushy Creek corridor

The creek and its trail system carry permanent habitat through the middle of town.

Two decades of building

Late-80s sections and brand-new subdivisions have completely different entry points.

Irrigated turf

Heavily watered lawns on rocky west-side ground concentrate fire ants and crickets.

Seasonal pattern

When fire ants peak in Round Rock.

Fire ants come in two waves rather than one long season. Spring rain pushes mounds up across the yard. Peak summer heat sends the colonies deep. Then fall arrives and the mounds are back like nothing happened.

Typical fire ant surface activity in Round Rock by month Fire ant activity has two peaks. It is very low in January and February, climbs steeply through March to a spring peak in April and May, drops through July and August as heat and drought push colonies deeper underground, rises again to a second peak in September and October, then falls away through November and December. January: very low activity February: low activity March: moderate activity April: very high activity, peak month May: very high activity, peak month June: high activity July: moderate activity August: low activity September: high activity, peak month October: very high activity, peak month November: moderate activity December: very low activity SPRING PEAK FALL PEAK not gone, just deeper JanFebMarAprMayJunJulAugSepOctNovDec lowhigh
Surface activityPeak months and best treatment window
Relative pattern of fire ant surface activity in Central Texas, not a measured local count. Spring rain collapses underground tunnels and forces visible mounds, hot dry summers push colonies deeper where mounds are far less visible, and foraging resumes in fall. Texas A&M recommends broadcast baiting in spring and again between late August and mid-October. Sources: Texas A&M Imported Fire Ant Project, Two-Step timing, Dr Robert Puckett, AgriLife Extension entomologist, Williamson County AgriLife, Two-Step method.
First peak
April & May

Spring rain destroys the tunnels and the colony comes up to rebuild. That is when the mounds become impossible to miss.

The summer trap
July & August

Looks like they are finished. They are not. The heat sends them deeper and the mounds fade out of sight.

Second peak
September & October

Foraging returns and the mounds follow. Texas A&M rates late August through mid-October as the prime baiting window.

From real jobs

Photos from genuine Round Rock jobs. Ants all look much the same at a glance, but the treatment is completely different depending on which one it is.

Trail of odorous house ants crossing a granite kitchen countertop toward a sticky spill and crumbs
Odorous house ants Kitchen counter

It starts with one scout and a spill. Squash one and the rotten coconut smell explains the name immediately.

Large dark carpenter ant on a tile floor beside a white painted baseboard with a gap at the seam
Carpenter ant Kitchen baseboard

Sizeable and alone. A carpenter ant indoors normally means damp wood close by, and the wood is what needs attention.

Line of reddish brown ants walking along a kitchen countertop seam toward a stainless steel sink
Trail to the sink Kitchen countertop seam

Straight to the sink without deviation. This is a water trail, and water trails do not care how clean the counter is.

Ants trailing along tile grout lines on a bathroom floor toward a small water droplet near a bath mat
Trail along the grout Bathroom floor

Grout used as a walkway, all converging on one drip. Ants spot the leak considerably earlier than people do.

Trail of small amber colored pharaoh ants along the edge of a bathroom countertop with a toilet in the background
Pharaoh ants Bathroom counter

Roughly 2mm, amber, and settled. Spray these and you turn one colony into several, which helps nobody.

Red imported fire ant mound in a lawn beside a concrete sidewalk with worker ants streaming across the pavement
Red imported fire ants Lawn at the sidewalk edge

Sealed-looking dome, no opening up top. The real doorways are tunnels surfacing some way out.

Photographs from actual Round Rock jobs. Every one of these is common locally. 843-480-8699 and we will identify it for you.

Know your pest

The ants we actually find in Round Rock homes.

Get the species wrong and the bait is decor. Round Rock complicates the guess by being two towns geologically: west of Brushy Creek the limestone hides colonies in seams and rock walls, east of it the clay holds fire ants deep and floats them up after rain. Add late-80s slabs in Forest Creek with settled cracks and fresh slabs in Behrens Ranch with open joints, and the shortlist gets long. Your technician confirms the species on site before treating anything.

Red imported fire ant (Solenopsis invicta) workers on a dry grass stem, showing their reddish-brown heads and darker abdomens

Red imported fire ants

Solenopsis invicta

Loose crumbly mounds in open turf with no front door. Aggressive when disturbed, and they sting repeatedly, because apparently once did not feel like enough. This is the dominant lawn ant here, and the reason yards need broadcast treatment instead of spot treatment. Red imported fire ant guide (Texas A&M)

Red imported fire ant workers. Reddish body, darker abdomen, and a sting you remember.
Odorous house ants (Tapinoma sessile) trailing along a dry stem, showing their small dark brown bodies

Odorous house ants

Tapinoma sessile

Your classic tiny brown sugar ant. Squish one and it smells faintly of rotten coconut, which is nature at its least appealing. They nest outdoors in damp soil, mulch and irrigation boxes, then trail indoors toward kitchens and pet bowls with real determination. Texas A&M key to identifying household ants

Odorous house ants on a trail. Small, dark, and endlessly persistent indoors.
Carpenter ant (Camponotus) on weathered wood, showing its large glossy black body and evenly rounded thorax

Carpenter ants

Camponotus spp.

Big black ants doing unpermitted renovations in damp wood: fascia, window trim, pergolas, anything touching soil. They do not actually eat the wood. They just hollow it out and leave the sawdust behind, which is somehow ruder. Little shavings under the trim are the receipt. Carpenter ant identification guide (Texas A&M)

Carpenter ant. Large, glossy black, and a sign of damp or damaged wood.
Acrobat ant (Crematogaster) on bark, holding its heart-shaped abdomen raised above its body

Acrobat ants

Crematogaster spp.

Named for raising that heart-shaped rear end in the air when annoyed. Dramatic little thing. They nest in wall voids and behind foam insulation on newer builds, usually through the same gaps the rodents opened first.

Acrobat ant with its heart-shaped abdomen raised. The name comes from that pose.
Rover ants (Brachymyrmex) crossing weathered wood near a nest opening, showing their very small dark bodies

Rover ants

Brachymyrmex patagonicus

Tiny dark ants that turn up around slab edges and patios by the thousand every summer, like somebody posted that there would be free tacos. Very common in newer subdivisions, and constantly mistaken for a fire ant problem.

Rover ants. Tiny, dark, and drawn to kitchens and bathrooms.
Pharaoh ant (Monomorium pharaonis) on weathered wood, showing its pale yellow body and darker abdomen tip

Pharaoh ants

Monomorium pharaonis

Tiny, pale yellow, and the one ant where the soil under Round Rock does not matter, because they live indoors near warm plumbing and wall voids. Spray them and the colony fractures into several, each with its own queen, and a Stone Oak kitchen problem becomes a whole-house problem. Bait only, placed along the trails, and patience while the workers carry it home. Repellent products are how these get worse, never better. Pharaoh ant identification guide (Texas A&M)

Pharaoh ant. Pale yellow and tiny. Never spray these, it splits the colony.
Tawny crazy ant (Nylanderia fulva) on a dry grass seed head, showing its golden brown body and dense pale hairs

Tawny crazy ants

Nylanderia fulva

Small, golden brown, and moving like they have had six espressos. No tidy trail, just chaos in every direction at once. They have no stinger, though they can bite. The real problem is the sheer numbers and their odd enthusiasm for electrical boxes and AC units, which is where a nuisance turns into an invoice. Fire ant baits do very little to them, so they need their own plan. Tawny crazy ant guide (Texas A&M)

Tawny crazy ant. Golden brown, hairy, and never walks in a straight line.
Texas leafcutting ants carrying cut green leaf fragments along a piece of bark

Texas leafcutting ants

Atta texana

Also called town ants or cut ants. You will notice the stripped plant before you notice the ants. They carry leaf fragments down a well-worn trail to feed a fungus garden underground, and they can strip a young tree in a single night. Colonies run deep and wide, so treating the mound you can see rarely settles it. Leafcutting ants (Travis County AgriLife)

Leafcutting ants hauling cut leaf sections back to the colony.

A note on bites and stings. Reactions vary from person to person, and any bite or sting can cause a serious reaction in someone sensitive to it. Nothing here is medical advice. If you are bitten or stung and feel unwell, or the reaction spreads or does not settle, contact a doctor or Poison Control. If breathing or swallowing is affected, treat it as an emergency and call 911.

Warning signs

How to tell it is a colony, not a one-off.

The first ant on your counter is a scout writing a report. The ones below are what happens when the report gets approved. Round Rock's two soils hide colonies differently, in rock seams to the west and deep clay to the east, so tell us which side of Brushy Creek you are on when you call. Most days we can tell you over the phone if it needs same-day attention.

  • Fresh mounds in the yard within a day of rain
  • A steady two-way trail along baseboards or slab edges
  • Ants concentrated at dishwashers, sinks and pet bowls
  • Sawdust-like shavings under window trim or fascia
  • Winged swarmers indoors in spring and early summer
  • Ants inside the electrical panel or AC disconnect
  • Ants surfacing from limestone seams on a west-side lot
  • Mounds lifting through clay in Teravista or Paloma Lake after storms

Where we treat ants in Round Rock.

West of Brushy Creek in Behrens Ranch, Mayfield Ranch and Cat Hollow, ant colonies sit in limestone seams and rock walls and surface wherever the sprinklers run. East in Teravista, Paloma Lake and Chandler Creek, the clay floats fire ants up after every storm. Forest Creek and Stone Oak add decades-old slab cracks for sugar ants to use. An ant exterminator in Round Rock has to know which of those three situations your street is, and this one does.

Behrens Ranch Cat Hollow Chandler Creek Forest Creek Greenhawe Lake Creek Mayfield Ranch Meadow Lake Oak Bluff Paloma Lake Sonoma Stone Oak Teravista Turtle Creek Vista Oaks Walsh Ranch

Not listed? We almost certainly cover it, see pest control in Round Rock or the full service area.

Questions Round Rock homeowners ask about ants.

How much does ant control cost in Round Rock, TX?

Ant control is included in our recurring general pest plan starting at $66 per month for a single-family home in Round Rock. That covers ants along with spiders, roaches, scorpions, wasps and rodents, so the whole ensemble cast on one ticket. Bigger house, bigger lot, the number moves. We confirm your exact price with a free on-site quote, and there is no inspection fee.

How long does it take to get rid of fire ants?

You will usually see mound activity drop within a few days of the first treatment, and most Round Rock yards are substantially clear within two to three weeks. Fire ants are a dirt problem more than a house problem, so the granular needs a watering cycle or two to wake up and get to work on the colonies sitting below the surface.

Why do the ants keep coming back after I spray them?

Because you got the delivery drivers, not the warehouse. About 90 percent of a colony never leaves the nest, including the queen, who is out-laying your spray bottle without breaking a sweat (Weizmann Institute study, eLife). Some species panic and split into several colonies when they taste something repellent, which is how one problem becomes five. We bait so the workers carry it home to her, because that is the only thing that actually ends a colony.

Is ant treatment kid and pet friendly?

Our treatments are pet and kid friendly and applied where ants travel rather than where your family does, and baits are placed in cracks, voids and stations out of reach. Keep kids and pets off treated turf until it dries, typically about 30 minutes, and your technician will walk you through everything applied before leaving.

Do you treat inside the house or just outside?

Both, and the outside is the important half. Outside is the colony's address. Inside is just where it eats. The standard visit covers foundation, yard and property line, and if ants are already indoors we treat entry points and bait the same visit at no extra charge.

Do I need ant treatment year-round in Round Rock?

Yes. Fire ants stay active through Central Texas's mild winters, and odorous house ants move indoors specifically when weather turns, toward moisture in dry months and warmth in cold ones. Recurring service maintains the treated barrier so new colonies cannot establish against your foundation in the first place.

Does the treatment change east or west of Brushy Creek in Round Rock?

It does, and it is the first thing we sort out. West of the creek in Vista Oaks or Cat Hollow, colonies sit in limestone seams, so we bait along the rock and stone edges rather than hunting a mound. East in Teravista or Paloma Lake, fire ants live deep in clay and surface after rain, so broadcast granular over the turf, timed to watering, does the work. Same plan and same price, different placement.

Why do my older Round Rock slab's ants come up through the floor?

A slab poured in the late 80s in Forest Creek or Stone Oak has had decades to settle, and every hairline crack and plumbing penetration is a route from the soil straight into the kitchen. Odorous house ants nesting in the damp ground under the mature canopy find those gaps quickly. We treat the foundation edge outside and bait the interior entry points, and where a gap is obvious we point it out so it can be sealed.

Also on our Round Rock routes

Scorpion control in Round Rock, TXScorpion controlRound Rock, TX Rodent control in Round Rock, TXRodent controlRound Rock, TX Mosquito control in Round Rock, TXMosquito controlRound Rock, TX Spider control in Round Rock, TXSpider controlRound Rock, TX Cockroach control in Round Rock, TXCockroach controlRound Rock, TX OtherSee all services

Ant control around Round Rock

We treat ants in every city we serve. Same crew, same guarantee, different dirt entirely. Choose your city below, read the full ant control overview, or check the complete service area.

Austin Cedar Park Georgetown Hutto Leander Pflugerville

Answered 24 hours · Round Rock, TX

Ants gone. And a plan so they stay gone.

Free quote, same-day service across Round Rock, and free re-treatments if they come back between visits.

Back to top