TERRO® Ant Killer attracts and kills all common household ants. The liquid ant killer is specifically designed – using the active ingredient Borax – to kill the worker ant in two to three days, giving the foraging ants enough time to share the bait with the rest of the unsuspecting colony.
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.
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.
This is the only way to get rid of both the ants you see and the thousands you don’t! 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
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:
- 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
- 0.36 fl. oz. each
- Contains sodium tetraborate decahydrate (Borax) (5.40%) and other ingredients (94.60%)
1TERRO® Liquid Ant Killer is rated out of 5 by 30.Rated 5 out of 5 by CKalbach from These work well. My wife and I have been using Terro ant baits for about two years now to help control ants in our Southern California home. We have a recurring problem in that when the the weather gets hot and dry, the ants want to move in and live with us. We were constantly battling to keep them out of the kitchen. We've found that putting a few traps in out of the way places and allowing as many ants to feed from the traps as want to has almost completely eliminated the kitchen invasions. In at least one instance, we believe that using these traps wiped out a nest inside the walls of our home. We bought the traps first and reload them using bottles of liquid ant killer. I keep several traps and bottles on hand for when the weather turns warm.Date published: 2015-06-26Rated 5 out of 5 by Cari from So easy and inexpensive I used to make my own ant bait , because everything in the store was so toxic. Terro uses the same safe ingredients I do , only there is something else in it that works like magic to draw those little buggers in like nothing have ever seen. After they ate up all the traps I set for them in two days, the remaining stragglers that didn't die yet started attacking the bottle. There are no more ants left now. The cost of a bottle of Terro was LESS than I would have spent to make my own and it worked 100 times better.Date published: 2015-06-10Rated 5 out of 5 by Bob K Sr from FANTASTIC PRODUCT ! ! ! I have an addition on my home. Which is an "L" shaped room. I've lived here for about 35 years. As soon as summer come's around I've always had a problem with ants ! I've sprayed various ant killing product one after another with no success. One year even hired an exterminater... Last year my housekeeper brought me some Terro Ant Killer Liquid. I applied it around the room as directed. And never seen another ant all last summer. This year I bought the 2 pack. It arrived just in time. As I had seen a few ants again this year. As soon as I applied it ( About a week ago) I haven't seen a single ant !!! Not even a relative...lol What a GREAT PRODUCT !!! What a GREAT company !!! Thank You TERRODate published: 2015-06-08Rated 5 out of 5 by wwiz from Works Fantastically! Ants immediately attracted to the bait, now no more ant problem!Date published: 2015-05-21Rated 5 out of 5 by staats18 from Works Great I just bought some and it works great And kills themDate published: 2015-05-10Rated 5 out of 5 by Nick from Simple and Effective. I'm not sure what happened with the other reviewer but I've always had great luck with this product. It's always been my staple for getting rid of ants in my house. I had to use it about three years ago and I have been ant free until this year. It seems just as effective as it was last time. I really like the fact that I can place it anywhere and on any flat surface, on a piece of foil or cardboard, that I deem necessary. I'm watching the ants eat it as I type this and looking forward to their eradication.Date published: 2015-05-07Rated 5 out of 5 by Lisa from Great product!! I have used the Terro Liquid Ant Baits for years and just recently had so many ants going in and out of the traps that they were clogging up the ant baits. So, this time I purchased the Terro Liquid Ant Killer and washed out the dead ants from the traps and refilled the ant baits with the Terro Liquid Ant Killer. You get the same fast and effective results with the Terro Liquid Ant Killer.Date published: 2015-03-03Rated 5 out of 5 by kristina from It's Great!!!!!! This product is great! I had ants SO bad at my back door I had tried everything... then heard about Terro, greatest thing ever!!! Within a few hours all the ants had made there way to this product. I was shocked. Had to go get more for my mother that had the same problem. She was also amazed. Would never think for the low price of this it would work so well. 10 times better then products 3 times the cost. Just have to say, this stuff really works! Would only use this now!!Date published: 2014-09-23
does the liquid terro work on grease ants?This product is effective against most household ants, however it will not attract ants that are searching for a protein or grease food source.Date published: 2015-06-27
When liquid dries after a couple of days and ants continue to eat at it, is it still active, or does it have to be in liquid form to be transported and kill the colony?The bait should be replaced once it has dried. If it has hardened the ants are not able to consume it.Date published: 2015-07-01
why do ants use tiny wood chips to cover liquid terro? they started to cover it with dirt, tiny wood pieces after one day. I replaced with fresh ferro, they covered it again. It has been 5 days already and I still see ants.It is common for ants to place small material near the bait. They may be attempting to "hide" the bait. As long as the ants are coming to the bait they will consume it and share it with the rest of the colony.Date published: 2015-06-26
Do you have to shake the liquid Terro before applying it to the squares?There is no need to shake the product before applying to the cardboard.Date published: 2015-06-26
We have Terro liquid ant killer that we've had over ten years. Is there a limit to how long it'll remain good?The bait does not have any expiration date, however we recommend replacing it every two years.Date published: 2015-07-01
is it harmful if a dog comsume's itThis product can be used as directed in a home with pets. We do recommend placing it in an area that is inaccessible to them.Date published: 2015-06-24
where do you cut to open very confusingThis product does not need to be cut. The lid can be removed and a few drops can be placed on the cardboard squares included on the packaging.Date published: 2015-06-01
will this product kill bell hornets?This product has not been tested for effectiveness against bell hornets, we apologize for any inconvenience.Date published: 2015-06-01
- 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.
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.