You should call an exterminator for ants when DIY methods have failed after one to two weeks, when ants are appearing in multiple rooms, when you suspect carpenter ants or structural damage, or when the same ant problem keeps returning season after season.

A few ants near a window or doorway can often be managed with basic cleanup and a bait station, but a persistent or expanding infestation almost always indicates a colony that’s established itself somewhere you can’t reach with store-bought products.

According to a 2025 Harris Poll and NPMA survey, 36% of Americans reported spotting ants in their home, making them the most commonly encountered household pest in the country.

We help homeowners across Reno, Sparks, Truckee, Carson City, and Northern Nevada deal with ant problems every day, and we’ve learned that the homeowners who get the best results are the ones who recognize the tipping point between a DIY situation and a professional one. This guide will help you identify that tipping point clearly.

Summary

• A few isolated ants near an entry point are worth a DIY attempt, but ants appearing in multiple rooms, returning after treatment, or causing visible damage are clear signals to call a professional.
• Carpenter ants are the one species in Northern Nevada that should always prompt an immediate call, because they tunnel into wood to nest and can cause structural damage that goes undetected for months.
• Professional ant treatment costs between $80 and $500 for a one-time visit, while quarterly prevention plans range from $400 to $800 per year. Both are significantly less expensive than repairing the damage a long-term infestation can cause.
• The most effective professional approach uses targeted baits that reach the queen and the colony, combined with perimeter treatment and exclusion, rather than the surface spraying that most DIY products rely on.

Signs You Can Still Handle It Yourself

Not every ant sighting requires a phone call. In many cases, a quick response from the homeowner is enough to resolve the problem before it grows. We believe in being honest about when professional help is necessary and when your own efforts will do the job.

When DIY Is Appropriate

A small number of ants in one location, near an obvious entry point, is usually a manageable DIY situation. This typically looks like a trail of 10 to 20 ants coming in from a window frame, a door gap, or a crack in the baseboard and heading toward a specific food or water source.

Here’s what a reasonable DIY response looks like:

• Clean the trail with soapy water or vinegar to destroy the pheromone pathway
• Remove the food or water source that attracted them
• Place a bait station near the trail’s entry point and let it work for 5 to 14 days
• Seal the gap or crack where ants are entering with caulk

If this approach eliminates the ants within one to two weeks, you’ve solved the problem. The colony was likely small, the entry point was accessible, and the bait reached the queen before the population could expand further. There’s no need to call a professional for a problem that responds to basic intervention.

Key Takeaways

• A small ant trail in one location near an identifiable entry point is a reasonable DIY situation.
• Clean the pheromone trail, remove attractants, deploy bait, and seal the entry point. If the problem resolves within two weeks, the DIY approach worked.
• Bait is always more effective than spray for DIY ant control because it reaches the colony instead of just killing visible foragers.

Seven Warning Signs That Mean It’s Time to Call a Professional

When the problem goes beyond a simple trail near a window, the calculus changes. These seven signs indicate that the infestation has outgrown what store-bought products can handle, and each one is a clear signal to pick up the phone.

The Tipping Points

1. Ants keep coming back after DIY treatment. If you’ve cleaned, baited, and sealed, and ants are still appearing after two weeks, the colony is located somewhere your treatment can’t reach, likely inside a wall void, under the foundation slab, or in the yard near your home’s perimeter. Recurring ant problems after multiple DIY attempts is the single most common reason homeowners call us.

2. Ants are appearing in multiple rooms. A trail in the kitchen is one thing. Ants in the kitchen, the bathroom, the living room, and the garage means the colony has established multiple foraging routes throughout your home, and the infestation is more extensive than a single bait station can address.

3. You’re seeing large ants or sawdust-like debris. Large ants (half an inch or longer) with a smooth, rounded thorax are likely carpenter ants. If you’re finding small piles of fine, sawdust-like frass near wooden surfaces, baseboards, or window frames, carpenter ants are actively tunneling into the wood structure of your home. Carpenter ant damage in the U.S. contributes to hundreds of millions of dollars in structural repairs annually, and the damage is invisible until it becomes severe.

4. The ant trails are dense and persistent. A trail of 10 to 20 ants is one thing. A thick, wide trail of hundreds moving in both directions between an entry point and a food source signals a large, well-established colony with a strong pheromone highway that won’t be disrupted by a single cleaning.

5. You’ve found a nest inside your home. If you’ve discovered an ant colony behind an appliance, inside a wall void, beneath a cabinet, or in any interior space, the problem is beyond DIY territory. Interior nests mean the colony has fully established itself inside the structure.

6. Ants are contaminating food regularly. Finding ants in sealed pantry items, inside the refrigerator door gasket, or in pet food storage indicates a level of foraging penetration that basic cleanup won’t resolve. At this point, the colony’s access to your home is thorough enough that they’re reaching deeply stored food sources.

7. The problem returns every year. Seasonal ant problems that reappear at the same time each year, despite annual DIY efforts, indicate either a permanent colony near your home or recurring entry points that haven’t been addressed. A professional perimeter treatment and exclusion plan breaks the seasonal cycle by targeting both the colony and the conditions that allow re-entry.

Key Takeaways

• Recurring ants after DIY treatment, activity in multiple rooms, and carpenter ant signs are the three strongest indicators that professional help is needed.
• Dense, persistent ant trails and interior nests signal a colony that’s too large and too well-established for store-bought products.
• Annual recurring ant problems point to a permanent colony or unaddressed entry points that require professional assessment.

Why Carpenter Ants Require Immediate Professional Attention

While most ant species in Northern Nevada are primarily nuisance pests, carpenter ants are in a different category entirely. Carpenter ants don’t eat wood, but they excavate it to create nesting galleries, and the structural damage they cause can be extensive, expensive, and completely hidden until it’s severe.

The Carpenter Ant Difference

Carpenter ants are attracted to moist or softened wood, which means homes with past or present water damage, leaky roofs, or plumbing issues are at higher risk. In Northern Nevada, homes with wood decks, aging siding, or older framing are particularly vulnerable. The ants tunnel into the wood to nest, hollowing out galleries that weaken the structural integrity of beams, joists, and framing over time.

The challenge with carpenter ants is that the damage happens inside the wood where you can’t see it. By the time you notice sagging floors, crumbling trim, or hollow-sounding walls, the colony has been working for months or even years. Fine sawdust-like frass found near wooden surfaces is the earliest visible sign, and it should prompt an immediate professional inspection.

A professional technician can locate the colony through a combination of visual inspection, sound detection (tapping along wood surfaces to find hollow areas), and targeted treatment that reaches the nest inside the wood. This is not something bait stations or surface sprays can accomplish.

Key Takeaways

• Carpenter ants cause structural damage by tunneling into wood, and the damage is hidden until it becomes severe.
• Fine sawdust-like frass near wooden surfaces is the earliest warning sign and should prompt an immediate professional inspection.
• Professional treatment for carpenter ants requires locating the nest inside the wood and treating it directly, which is beyond the capability of DIY methods.

What Professional Ant Treatment Involves

If you’ve decided it’s time to call a professional, understanding what the service includes helps you evaluate providers and set realistic expectations for results.

The Professional Approach

A thorough professional ant service follows a predictable sequence:

Inspection and identification. The technician inspects your home inside and out to identify the ant species, locate entry points, trace foraging trails back to likely nesting sites, and assess the scope of the infestation. Species identification is critical because different ants respond to different baits and treatment strategies. Odorous house ants, pavement ants, and carpenter ants each require different approaches, and misidentification leads to wasted time and money.

Targeted baiting. Professional-grade gel baits and liquid baits are placed in cracks, crevices, and along confirmed travel routes. These baits contain slow-acting active ingredients that foragers carry back to the colony and share with the queen through trophallaxis, their natural food-sharing process. Over 5 to 14 days, the toxicant spreads through the colony and collapses it from the inside.

Perimeter treatment. A professional exterior treatment creates a chemical barrier around your home’s foundation that intercepts ants before they enter. This is one of the most valuable components of professional service because it provides ongoing protection that interior treatment alone cannot.

Exclusion recommendations. A good technician will point out the specific entry points ants are using and recommend sealing them with caulk, steel mesh, or weatherstripping. Exclusion provides the longest-lasting component of any ant management plan because it physically prevents future access.

Follow-up. Depending on the severity of the infestation, a follow-up visit may be scheduled to monitor bait consumption, check for residual activity, and apply additional treatment if needed.

Key Takeaways

• Professional ant service combines inspection, species identification, targeted baiting, perimeter treatment, and exclusion for comprehensive results.
• Species identification drives every treatment decision. Different ant species respond to different baits and strategies.
• Perimeter treatment is one of the most valuable professional services because it creates a continuous barrier that prevents ants from re-entering.

What Professional Ant Treatment Costs

Cost is a reasonable concern, and we want you to have realistic numbers before you call.

Pricing for Northern Nevada

One-time ant treatment typically costs $80 to $500 depending on the species, severity, and size of the property. A straightforward pavement ant or odorous house ant infestation on the lower end. A carpenter ant infestation requiring wall void treatment and structural assessment on the higher end.

Quarterly prevention plans run $400 to $800 per year, which works out to $100 to $200 per visit and provides year-round protection aligned with Northern Nevada’s seasonal pest cycles. For homes with recurring ant problems driven by our arid climate and cold winters, quarterly service is the most cost-effective option because it prevents infestations rather than reacting to them.

Compare those numbers to the cost of repeated DIY product purchases ($15 to $30 per attempt, multiple times per year), the continued contamination and frustration of an unsolved problem, and the potential for structural damage from carpenter ants that can cost thousands to repair. Professional treatment almost always costs less in the long run than the cumulative expense of failed DIY attempts plus the damage that occurs while the problem goes unresolved.

In Northern Nevada’s dry climate, ants are driven indoors primarily by their search for water, which means the pressure is constant and the need for prevention is ongoing. A quarterly plan that addresses seasonal ant activity proactively is far more effective than waiting for the annual invasion and scrambling to respond.

Key Takeaways

• One-time professional ant treatment costs $80 to $500, and quarterly prevention plans run $400 to $800 per year.
• Professional treatment is typically cheaper long-term than repeated DIY purchases combined with the damage and frustration of an unresolved infestation.
• Quarterly service is especially valuable in Northern Nevada because the arid climate drives persistent, year-round ant pressure.

Know When to Make the Call

We understand the desire to handle things yourself, and for small, straightforward ant problems, that instinct often serves you well. But when DIY methods stop working, when ants appear in multiple rooms, when you suspect carpenter ants, or when the same problem returns year after year, calling a professional isn’t giving up. It’s the smartest move you can make to protect your home and your sanity.

At Right Away Pest Solutions, we’ve been solving ant problems for homeowners across Reno, Sparks, Truckee, Carson City, and the surrounding Northern Nevada communities for over 20 years. We use bait-based strategies that target the colony, professional perimeter treatments that create a lasting barrier, and exclusion recommendations that prevent future access. We offer free inspections with no obligation, no contracts, and a satisfaction guarantee on every service.

Call us at (775) 722-7708 to schedule your free ant inspection and find out exactly what you’re dealing with. Learn more about our full range of pest control services across Northern Nevada.