TERRO® Liquid Ant Killer

Model #: T100-12

43 reviews
0 5 4.8

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  • Attracts & kills all common household ants
  • Attracts ants fast
  • Kills the ants you see and the ants you don’t
  • Buy More, Save More - discounted price per each

Product Description:

Terro Ant KillerTERRO® Ant Killer attracts and kills all common household ants. The liquid ant killer is specifically designed – using the active ingredient Borax – to allow worker ants to consume the product and survive long enough to carry the liquid back to the nest and deliver a dose to the rest of the colony. Complete control may take up to two weeks. 

To use our best ant killer, simply apply the product directly from the bottle onto the provided cardboard squares and place near indoor areas where ants are spotted.

How Does It Work?

TERRO® Ant Killer is a bait product, so at first ants will come in large numbers, but they will soon disappear. This liquid ant killer is specifically formulated to allow worker ants to consume the product and survive long enough to carry the liquid ant killer back to the nest and deliver a dose to the rest of the colony. Baiting enables you to get rid of both the ants you see and the ants you don't.   

Leave our at-home ant killer undisturbed while the ants are actively feeding on it. Be sure to eliminate all other food sources in the area. This will ensure that the ants aren’t tempted to eat anything but the deadly liquid ant killer – indoors and out.

While the active ingredient in our indoor ant killer will ultimately kill the worker ant, it interferes with the ant's digestive system and works just slowly enough that the worker has time to get back and share the ant bait with the rest of the colony. This slow kill is needed to allow time for the foraging ants to make several trips to the bait and deliver enough bait to the rest of the colony.  

Directions for Use

Why Liquid over gel bait?

Tear the "PLACE TERRO® HERE" cardboard squares from the home ant killer packaging along the perforated lines and simply apply the liquid ant killer directly from the bottle onto the square. Small pieces of paper, cardboard or foil may also be substituted.

Place this household ant killer where ants are seen, such as the edges of sinks, tubs, window sills, under food cabinets, along floors and baseboards, and in corners. Do not skimp on bait placements; the more bait placements, the better.

The key to effectively eliminating the ant infestation is to monitor the placements and ensure there is always a fresh supply of TERRO® Ant Killer for the ants to feast on. Depending on the size of the ant invasion, complete control may take up to two weeks.

Resist the temptation to interfere when the ants come in droves — your patience will pay off as you watch your ant infestation dwindle and then disappear.  

Since invading ants usually have outdoor nesting sites, it often helps to put our best ant killer outside the home, close to where ants are found entering the structure. Ants typically follow defined trails from the nest to food or water, so placing the ant killer close to these trails will improve control.

View video for tips on how to easily and effectively kill common household ants with TERRO® Liquid Ant Baits:


Product Features

  • Attracts and kills all common household ants
  • Convenient and easy-to-use
  • Place baits near ant trails or where ants are numerous
  • Use enough ant killer to ensure sufficient supply for the ants
  • What’s in the Box

  • 1 oz bottle of ant killer
  • Nine cardboard squares for product placement
  • Specifications

  • 1.0 fl oz
  • Contains sodium tetraborate decahydrate (Borax) (5.40%) and other ingredients (94.60%)
  • Reviews

    Disclaimer: Zareba® System does not endorse any information contained in product reviews. Please follow all label instructions for your specific use.

    Most Recent Customer Reviews

    Review Rate
    Review posted on www.zarebasystems.com
    August 13, 2017
    Kills em dead By Snoot

    I have been invaded with sugar ants/ crazy ants. I have sprayed with biding it. Used powdered borax. Aerosol ant spray. Window cleaner. U name it I've tried it. NOTHING WORKS. Then I remembered my mom using Terro and how cool it was to see the ants go to it and gather all around and eat it. Then a few days later the ants were gone. Well hor some today. The lil buggers sre all around eating it. And I really want to kill them but I know I have to leave them alone so they will take the poison back to the nest . This stuff is great. I will never be without it in my home again

    Review Rate
    Review posted on www.zarebasystems.com
    August 9, 2017
    Love it! By GaMama

    TERRO LIQUID ANT KILLER. Crack - for ants.

    Review Rate
    Review posted on www.zarebasystems.com
    August 4, 2017
    Best Product! By Ant hater

    OMG!!!! This is wonderfullll!!! Ants will be gone in 1 day!!! Best product EVER!!!!!!!

    Review Rate
    Review posted on www.zarebasystems.com
    July 30, 2017
    It Works! By Beth

    We were plagued by ants in our kitchen for a few years and nothing we tried worked. I read about Terro liquid ant killer in Southern Living magazine and immediately ordered it. We've had the traps out about three weeks now and haven't seen a single ant since, and this is their active season! Thanks Terro!

    Review Rate
    Review posted on www.zarebasystems.com
    July 4, 2017
    Works like magic By Deb M

    Excellent excellent stuff. My husband brought home a few of the traps and said someone gave him these and said they are the best for killing ants. We put out a trap and within an hour the thing was filled with ants lining up 3 deep to drink at the trough...by evening, the bait trap was empty and then.....amazing! Ants gone!!!. So let it do its job, set it down, watch as it attracts all those little pests, watch as they gorge themselves, run back to their hideouts....knowing the whole pack of em are getting a good dose of the stuff too and presto, no more ants. LOVE THIS STUFF.

    Review Rate
    Review posted on www.zarebasystems.com
    June 11, 2017
    Good stuff By Cindy

    Works every time ..they are on it like white on rice

    Review Rate
    Review posted on www.zarebasystems.com
    June 5, 2017
    GREAT STUFF!! By Sandy

    The liquid TERRO is the best stuff on the market to kill those tiny little ants!!! I have referred many of my family and friends to this magic solution. Used it two summers ago, last summer never saw an ant! They returned this spring and used Terro for about four days and they are all gone. Try TERRO liquid, you will not be disappointed!!

    Review Rate
    Review posted on www.zarebasystems.com
    May 30, 2017
    The Best of the Best By Shazza

    Amazing stuff! This was recommended to us by a professional exterminator. It works, and it's the best out there! Thank you Terro!

    Review Rate
    Review posted on www.zarebasystems.com
    May 25, 2017
    This product really works!!! By Dave C

    Finally- A product that does what it says it will do! I have tried numerous liquids and sprays will little to no success on persistent ant issue over the past 2 years. They were marching up our front porch and into the house. There are good bug killers on the market that just seem to have little effect on the tiny house ants we are having real issues with. Last weekend I bought some Terro drops based on a recommendation and placed on the base of our front porch pillars. Within a few hours it was like cattle to a watering hole and the ants were drinking up. 5 days later zero ants! Its nice to find a product that performs to expectations these days. Thanks!

    Review Rate
    Review posted on www.zarebasystems.com
    May 23, 2017
    Fast working By Susan

    This is amazing!! It worked faster than advertised for me.

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    All About


    There are more than 10,000 known species of ants living throughout the world. Like other insects, they have six legs; each with three joints. Ants have large heads with compound eyes, elbowed antennae and powerful jaws. Ants are social insects that live in structured nest communities throughout the world. The species of ant determines whether they live underground, in mounds built at ground level, in wood structures or in plants or trees.

    More About Ants


    Why are ants always invading my kitchen, bathroom and laundry areas?

    Ants are attracted to food, water and shelter. Kitchens, bathrooms and laundry rooms provide at least two of these conditions, making it an ideal haven for ants to congregate.

    What’s the difference between liquid and gel ant baits?

    It’s a little known fact that adult worker ants cannot digest solid food (bait). Their anatomy is designed for transporting and digesting liquids only. Solid foods must be carried back to the colony for additional processing by the larvae stage. Liquid baits exploit this unique physiology by making it easy for ants to transport the liquid bait back to the rest of the colony, including the queen, larvae and other workers.

    I just placed TERRO Ant Killer in my kitchen and it’s attracting more ants, not killing them! What’s going on?

    You have nothing to worry about! Initially, you will see more ants. As ant foragers look for food, they are attracted to the sweet liquid in the bait which they consume and carry back to feed to the rest of the colony. On the way back to the nest, the ants drop what it called a ‘trail pheromone’, letting the other ants know where the tasty food supply is. In turn, these ants follow the trail to the bait which explains why you initially see more ants.

    The active ingredient in the bait interferes with the ants' digestive systems, eventually killing the ants within 24-48 hours after consumption. This slow kill gives the worker ants enough to get back and share the bait with the colony. Baiting is the only way to successfully wipe out the ants you see and the thousands you don’t.

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