Does Terro T360 actually work?

Yes, for household ants, when placed directly on an active trail and left undisturbed. Its dual sweet-liquid-plus-protein-paste design specifically addresses the most common reason single-matrix baits fail: the colony not currently preferring the food type on offer. UC IPM recommends exactly this approach — offering different bait formulations in one station so ants can choose — and both actives (borax and abamectin) are extension-recognized, slow-acting toxicants that let foragers carry a dose home before dying, reaching the colony rather than just the workers you see.

Why do I see MORE ants after placing T360?

This is expected and it means the bait is working, not failing. As foragers find an attractive food source, they recruit nestmates with a pheromone trail, so you'll typically see a surge in visible activity in the first few days. Resist the urge to move, spray, or wipe the trail during this stage — that's the single most common way people sabotage the bait, and it's a genuinely counterintuitive instinct worth overriding. The surge typically declines within about a week as the colony gets dosed.

How is T360 different from Terro's other liquid ant bait, T300?

T300 is a single-matrix sweet borax liquid station. T360 is a dual-reservoir station that pairs that same sweet borax liquid with a separate protein/grease paste containing abamectin, so ants that are currently favoring protein over sugar still have an attractive bait option. If you already know your ants are grease-seeking, or you're not sure which they prefer, T360's two-sided design is the more versatile choice; if you know they're actively trailing to something sweet, either product will work.

Can I use T360 on carpenter ants?

No — Terro's own label excludes carpenter ants, along with fire ants, pharaoh ants, and harvester ants. Carpenter ants nest in structural wood, and UNH Extension calls them one of New Hampshire's most troublesome structural pests alongside termites. Neither the sweet nor the protein side of this station is formulated to reach or control a carpenter-ant colony. If you're seeing large black ants indoors, especially in winter, treat that as a call-a-pro signal rather than a bait-station job.

How long before I see results?

Give it time — this is a colony tool, not a same-day spray. Expect an activity surge in the first few days as ants recruit to whichever side of the bait they prefer, then a decline over the following days as the colony is dosed. Complete control can take up to two weeks, and larger or multi-queen colonies can take longer. Switching to a contact spray out of impatience during the surge will likely undo progress the bait has already made, since foragers killed on contact never make it back to share the dose.

Is it okay to clean up around the bait stations?

Yes, but be selective about where. Cleaning up crumbs, spilled sugar, grease, and pet food near the stations actually helps, because it removes competing food sources and makes the bait more attractive by comparison. What you should not do is wipe, spray, or clean the trail line itself or move the stations while ants are actively feeding — that erases the pheromone path ants are following and can stall the whole baiting cycle.

Daniel Brady · NH-Licensed Pesticide Applicator · License #782664

How to Use Terro Liquid Ant Bait Stations (T360)

Workhorse

Sodium tetraborate decahydrate (borax) 5.40% (sweet liquid side)Abamectin B1 0.05% (protein paste side)

Terro's T360 works when you place the sealed dual-reservoir stations directly on or beside an active ant trail and then leave them alone. Unlike a single-matrix bait, T360 offers ants a choice: a sweet 5.40% borax liquid on one side and a protein/grease 0.05% abamectin paste on the other, so whichever the colony currently prefers, there's bait it will take — a design UC IPM specifically recommends for household ant control. Both actives are slow-acting by design: foragers feed, carry the dose home, and share it colony-wide before it kills them. Expect to see MORE ants at the bait for the first few days — that's recruitment, not failure, and disturbing the stations during that window is the single most common way people sabotage the product. It does not work on carpenter ants, fire ants, pharaoh ants, or harvester ants (Terro's own label excludes all four), and full colony-level control on a larger population can take up to two weeks.

At a glance

Efficacy: Workhorse
Best job: Delivering a colony-level dose regardless of whether the ants are currently favoring sweets or protein/grease, because the station offers both
Format: Pre-filled, sealed dual-reservoir bait stations — a sweet borax liquid side and a protein/grease abamectin paste side in one station, no mixing (EPA Reg. No. 149-21)
Technique: Easy technique

The honest verdict

Does this product actually work?

The verdict on this product

WorkhorseEasy technique

Workhorse

A genuine workhorse for household ants — its dual sweet-and-protein design is a smart fix for the single biggest reason baits fail.

Most single-matrix ant baits fail for one reason more than any other: the colony is currently craving the food type the bait doesn't offer. T360 solves that by giving ants a sweet borax liquid on one side and a protein/grease abamectin paste on the other, letting the colony self-select — a design UC IPM specifically endorses, recommending 'different formulations of various bait products in a single baiting station, giving ants a choice.' Placed directly on active trails and left undisturbed, it reliably reaches the colony, not just the workers you see. It fails on carpenter ants and the other label-excluded species, and like every colony-transfer bait it stalls if the trail gets disturbed or too few stations are deployed.

Best for

NH nuisance ants (odorous house, pavement, little black, Argentine, acrobat, and similar) where you're not sure whether the colony currently prefers sweets or protein.

Skip it for

Carpenter ants, fire ants, pharaoh ants, and harvester ants — Terro's own label excludes all four, and carpenter ants need a contact product plus nest work, not a bait station.

Read the label first

What it is — and what it's really for

The label is the law. Here's the honest read on the format, the one job it does well, and the job people wrongly buy it for.

Format

Pre-filled, sealed dual-reservoir bait stations — a sweet borax liquid side and a protein/grease abamectin paste side in one station, no mixing (EPA Reg. No. 149-21)

Indoor / outdoor

both

Residual

A station keeps working as long as either side stays fresh and ants keep feeding; check and replace before a reservoir runs dry or the paste dries out, commonly within a few weeks of active feeding

Target pests

Odorous house ants, Pavement ants, Little black ants, Argentine ants, Acrobat ants, White-footed ants, Crazy ants, Big-headed ants, Other sweet- and protein-feeding household ants, Cockroaches (secondary label claim)

Best job

Delivering a colony-level dose regardless of whether the ants are currently favoring sweets or protein/grease, because the station offers both

Active ingredient

Sodium tetraborate decahydrate (borax) (5.40% (sweet liquid side)), Abamectin B1 (0.05% (protein paste side))

Not for (honest)

Carpenter ants, fire ants, pharaoh ants, and harvester ants — all explicitly excluded on Terro's own label

The technician's method

The technique walkthrough

Where DIY succeeds or fails is in the placement, patience, and the small pro moves the label never mentions. Follow the label; these are the technique details on top of it.

Easy technique~10-20 min to place; results build over days to two weeksTools:The pre-filled dual stations (no mixing), A flashlight to trace the trail, Nothing else — do not bring a spray bottle or cleaner

T360 is easy to place and easy to sabotage through impatience — the dual-matrix design does the hard work of matching the bait to the colony's appetite, so nearly every failure traces back to disturbance, not the bait itself.

Trace the trail before you place anything
Follow the visible ant line back toward its entry point or the busiest stretch of trail — that's where the station goes, not just 'somewhere near where ants were seen.'
Pro move
Check under sinks, along baseboards, and around window and door frames — trails concentrate at these entry points.
Common mistake
Placing a station in a random corner because that's where an ant was noticed once, rather than on the trail ants are actually using.
Place stations flat, right on the trail
Place the sealed stations flat directly on or immediately beside the active trail, at entry points, and along baseboards, both indoors and at outdoor entry points.
Pro move
Use multiple stations across different trail segments and entry points — more placements mean more foragers find bait faster, especially if several entry points are active at once.
Common mistake
Using just one station 'to see if it works' — a single placement dramatically slows colony-level uptake.
Let the dual matrix do its job
Don't try to guess or force which side ants should feed from — the whole point of the sweet-plus-protein design is that the colony self-selects.
Pro move
If you already know ants are grease- or protein-seeking (common in late summer/fall), T360's protein side is exactly the tool a sweets-only bait can't offer.
Remove competing food
Clean up crumbs, spilled sugar, grease, and pet food nearby so the bait is the most attractive food source available.
Caution
Clean around the trail, not on it — wiping the trail line itself erases the pheromone path ants are following.
Do not touch, move, or spray the stations once ants are feeding
Leave placements completely undisturbed while ants are actively feeding. Do not spray insecticide, wipe with cleaner, or vacuum near the trail.
Common mistake
Moving or spraying a station during the first-days surge, thinking more ants means the bait isn't working — this is the #1 mistake with this product.
Let the surge run its course, then check and replace
Expect noticeably more ants at the bait in the first few days as foragers recruit nestmates. Once activity declines, check stations periodically and replace any that have dried out or emptied.
Pro move
Note the placement date so you judge progress on a realistic one-to-two-week timeline instead of a same-day one.

Habits that decide it

Do & don't

Place stations directly on or beside the active trail
Use multiple stations across trail segments and entry points
Let the sweet and protein sides do their own selection
Remove competing food and moisture near (not on) the trail
Be patient through the first-days activity surge

Don't

Don't spray or wipe the trail — it breaks the pheromone path
Don't move or disturb stations once ants are feeding
Don't expect overnight results
Don't use it on carpenter ants — it's the wrong tool
Don't leave a dried-out or empty station in place expecting it to keep working

The honesty moat

Where it works vs. where it fails

No product fixes everything. This is the honest boundary — the situations it genuinely handles, and the ones it simply won't.

Where it works

An active sweet- or protein-feeding ant trail is visible and identifiable
The target is odorous house, pavement, little black, Argentine, acrobat, or similar household ants
You're unsure whether the colony currently prefers sweets or protein
You can tolerate a days-to-two-week timeline without switching to a spray

Where it fails

The target is carpenter ants, fire ants, pharaoh ants, or harvester ants (all excluded on Terro's own label)
No active trail can be found — only scattered scouts
The trail gets disturbed by cleaning, spraying, or moving the stations
The colony is very large or has multiple satellite nests beyond homeowner-scale baiting

Don't throw money away

Mistakes that waste the product

Moving, spraying, or wiping the trail during the activity surge

Kills foragers before they carry bait back and destroys the pheromone trail the whole strategy depends on.

Fix

Leave the trail and stations completely undisturbed; let the surge run its course.

Placing only one station

Fewer placement points mean fewer foragers encounter the bait, slowing colony-level uptake.

Fix

Deploy multiple stations across trail segments and entry points.

Leaving competing food out nearby

Ants will feed on easier food sources instead of the bait, stalling the program.

Fix

Clean crumbs, spills, and pet food around the trail (not on it) so the bait wins the competition.

Expecting results in a day or two

Judging the product on a same-day timeline and abandoning it for a spray misreads how the slow-acting mechanism works.

Fix

Give it up to two weeks, especially for a larger or multi-queen colony.

Using T360 on carpenter ants

Terro's own label excludes carpenter ants (along with fire, pharaoh, and harvester ants) — the bait isn't formulated for a structural nest and won't clear it.

Fix

Use a contact product for foragers or, better, call a professional for suspected carpenter-ant activity.

Calibrated expectations

What to expect — and when

Judge this product on colony-level decline over days to two weeks, not on how many ants you see tomorrow.

First few hours to days
Visibly MORE ants at the bait as foragers recruit nestmates — this is the bait working, not a worsening infestation.
Days 3-7
Foraging activity at the bait typically starts to decline as the colony is dosed through whichever side it's feeding on.
Up to 2 weeks
Complete control on most household colonies; larger or multi-queen colonies can take longer.

When results plateau

If activity hasn't declined after two weeks of correctly placed, undisturbed baiting, the trail was likely disturbed, or the colony (carpenter ants, or a large multi-satellite nest) is beyond what a homeowner-scale bait-station program clears.

Know the ceiling

When to stop DIY & call a pro

A borax station relies on sustained sweet-feeding, and ants abandon it the moment they switch to a protein or grease preference — or when the colony is too large to drain. These are the honest signals it's time to bridge to a licensed technician:

Trails persist past about 2 weeks of correctly placed, undisturbed baiting
Persistent activity despite correct technique usually means a colony larger than homeowner-scale baiting can clear.
You see large black ants, especially indoors in winter, or hear rustling in walls
Those are carpenter-ant indicators — a structural pest T360's label explicitly excludes, needing professional inspection.
Activity reappears at multiple points around the structure
That can signal a large colony or multiple satellite nests beyond a single baiting program.
Trails keep returning at the same interior entry point despite repeated exterior baiting
An unaddressed exterior colony or entry pathway needs targeted, professional treatment to close for good.

When correct, patient baiting still isn't holding the line, Anchor's licensed NH technicians identify the species and the nest and treat the actual source. Free inspection, same-day service across southern and central New Hampshire.

Trails still active after two weeks of correct baiting?

Get a Free inspection (603) 785-0118

Before you treat

Is it safe for pets & kids?

The short version lives here; the full per-species verdict lives on this product's pet-safety page.

Both actives sit at low concentrations inside sealed, enclosed stations designed to be low-risk in normal household placement — but the reservoirs aren't harmless if a pet or curious toddler accesses one directly. The practical precaution is placement, not avoidance.

Re-entry: Place and keep stations out of reach of pets and children — under appliances, in cabinet corners, or behind furniture rather than on open floor.

If there's an exposure, call

ASPCA Animal Poison Control: (888) 426-4435 Pet Poison Helpline: (855) 764-7661 Northern New England Poison Center: (1-800) 222-1222

See the full per-species pet-safety verdict for this product

New Hampshire context

Trail timing in New Hampshire

Southern and central New Hampshire's sweet-feeding nuisance ants push indoors as trails warm in spring and again as they seek shelter in fall, and their diet can shift toward protein/grease later in the season — exactly the shift T360's dual sweet-and-protein design is built to catch. Carpenter ants, common in NH's wooded lots, are the one local ant this product's label explicitly excludes; if you're seeing large black ants or debris near a nest site, that's Anchor's call, not T360's. Anchor Pest Services serves Manchester, Nashua, Concord, and the surrounding towns.

Service area

Southern New Hampshire

Anchor Pest Services · NH license #782664 · NEPMA member · family-owned since 2017.

Common questions

Frequently asked

Sources & further reading(6)

[1]
EPA Registered Product Label — Terro Dual Bait Stations / Ant & Roach Baits (T360), EPA Reg. No. 149-21
Verified dual-reservoir format and actives (borax 5.40% sweet liquid + abamectin B1 0.05% protein paste), labeled ant species list, exclusions
epa_labelverified 2026-07-14
[2]
Terro — Ant & Roach Baits (T360) product page
Station format, placement directions, and label exclusions for carpenter, fire, pharaoh, and harvester ants (facts only, not the efficacy verdict)
manufacturerverified 2026-07-14
[3]
UC Statewide IPM Program — Ants (Home & Landscape)
Recommendation to offer different bait formulations in one station so ants can choose sweet vs. protein; slow-acting bait mechanism reaching the colony
extensionverified 2026-07-14
[4]
NC State Extension — Tips for Effective Ant Baiting
Patience with slow-acting baits; do not disturb or spray baited ants
extensionverified 2026-07-14
[5]
UNH Cooperative Extension — Carpenter Ants Fact Sheet
Carpenter ants as a NH structural pest requiring a different approach than a liquid/paste bait station
extensionverified 2026-07-14
[6]
NPIC — Boric Acid General Fact Sheet
Borate mode of action as a stomach poison; efficacy sensitivity to concentration and moisture
npicverified 2026-07-14

Written & reviewed by

Verified

Daniel Brady

NH-Licensed Pesticide Applicator · License #782664 (NHDAMF, RSA 430)

Daniel Brady is the New Hampshire–licensed applicator behind Anchor Pest Services, a family-owned pest control company serving the Manchester area since 2017.

Verify license

Last updated July 2026

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Professional Pest Control

When Patient Baiting Still Isn't Enough

A dual bait station genuinely reaches a colony a spray can't — but a large, multi-satellite, or carpenter-ant colony can outgrow what a homeowner-scale program clears. Anchor Pest Services treats the actual source with targeted, licensed methods across southern and central New Hampshire. Family-owned since 2017, NH license #782664.

Get a Free inspection (603) 785-0118

Targeted colony/nest treatment, not just more bait
NH-licensed applicators (#782664)
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Keep Exploring

How to Use Terro Liquid Ant Bait Stations (T360)

Does this product actually work?

What it is — and what it's really for

The technique walkthrough

Trace the trail before you place anything

Place stations flat, right on the trail

Let the dual matrix do its job

Remove competing food

Do not touch, move, or spray the stations once ants are feeding

Let the surge run its course, then check and replace