TERRO® Ant Killer Spray

Model #: T401-6

17 reviews
0 5 4.6

Bulk Discount Pricing:

Buy 2+   $4.74 /ea.  5% off
Buy 6+   $4.49 /ea.  10% off
Buy 12+   $4.24 /ea.  15% off
Buy 24+   $3.99 /ea.  20% off
  • Kills ants, spiders, cockroaches, crickets, Asian lady beetles & other insects
  • Kills on contact & continues to kill up to 6 weeks
  • Use as a spot or crack-and-crevice application
  • For indoor or outdoor use
  • Buy More, Save More - discounted price per each
Cannot Ship To: AK, HI, PR

Product Description:

Arm yourself against ants and other unwanted insects with this convenient, 16 oz aerosol spray. With dual protection, TERRO® Ant Killer Spray provides fast killing action and keeps on killing for up to 6 weeks.

Indoor Use

Apply TERRO® Ant Killer Spray as a general surface, spot, or crack and crevice treatment to all non-food areas where ants and other pests crawl and hide. Stopping insects before they enter is key, so pay extra attention to potential entry points!

To control ants: Spray on trails, nests and points of entry. Use TERRO® Ant Killer Spray directly on ants when possible and repeat treatment if re-infestation occurs.

To control cockroaches, silverfish, crickets, scorpions, spiders, and Asian lady beetles: Spray into hiding places such as cracks and crevices, behind sinks, cabinets, along baseboards and floors, around drains and plumbing, hitting insects with spray whenever possible. Repeat treatment if re-infestation occurs.

Outdoor Use

Use TERRO® Ant Killer Spray to control ants, crawling insects, cockroaches, crickets and spiders. When spraying, point the spray nozzle away from your face, holding the can on a slight downward angle. For best results, spray when the air is calm. Spray ants directly where possible.


Product Features

  • Kills ants on contact and provides long-lasting residual control up to 6 weeks
  • Protects against cockroaches, silverfish, crickets, scorpions, spiders, centipedes and multicolored Asian lady beetles
  • Can be used indoors or outdoors
  • Convenient, easy-to-use aerosol spray bottle

    What’s in the Box

  • One 16 oz aerosol spray can


  • Contains Prallethrin [(RS)-2-Methyl-4-oxo-3-(2-propynyl) cyclopent-2-enyl (1RS)-cis, trans-chrysanthemate] (0.03%), Esfenvalerate [(S)-Cyano (3-phenoxyphenyl) methyl 4-chloro-alpha-(1-methylethyl) benzeneacetate] (0.05%), N-Octyl bicycloheptene dicarboximide (0.30%) and other ingredients (99.62%)
  • 16 oz aerosol spray can
  • For indoor and outdoor use
  • Reviews

    Disclaimer: Terro.com 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.terro.com
    October 8, 2016
    Terro evaluation By DBooker4314
    I rated the Terro good because it works so well, at least I think it does. The container that we received had no instructions on what we should do to make it work, by detaching the the blue tab. Had to phone in for instructions as to what to do. Should make it easier to understand.
    Review Rate
    Review posted on www.terro.com
    September 19, 2016
    excellent product By sherrycam
    I always recommend this to any one having an ant problem. It is the best product out there.
    Review Rate
    Review posted on www.terro.com
    August 23, 2016
    Do not spray directly onto insects By MonicaPrz

    I'm pretty surprised no one in the reviews mentions any negatives. While this product is great for spraying edges, it doesn't prove so when spraying directly onto insects/ ants or crevices. Its aerosol can has so much pressure or air that when you spray it, it sends the bugs flying. You literally need to get up close enough to whatever you are spraying as it does not come out in a stream like other brands. This can also be a problem if you're spraying crevices as it does not get directly into cracks; spraying only the outside as the high amount of pressure sends the product into the air. This was no defected can as I bought 2 and both sprayed the same. Negatives aside, it does work up to several weeks.

    Response From Terro®
    Patty : Consumer Relations Representative

    Hello Monica, We appreciate the time taken to provide this feedback and apologize for the experience. Our product team always looks for possible product improvements and consumer feedback is important. This product is designed to be applied as a coarse spray and surfaces should be sprayed until wet. Please contact our Consumer Relations Team at 1-800-800-1819 x 458 for additional assistance.

    Review Rate
    Review posted on www.terro.com
    August 21, 2016
    This spray is no joke. By Barry
    I sprayed all the floors in my house with this spray. The next day, almost all the ants were gone. The few ants left are on their way to death. If you follow one of the ants around after he's walked on the sprayed areas, you'll see him die in front of you within 5 minutes. This is after the spray has dried, of course. If they walk on the stuff when it's still wet, they die on contact. I had a really bad ant problem that was making me livid everyday. 5 days after I used this spray, I haven't seen one ant.
    Review Rate
    Review posted on www.terro.com
    July 29, 2016
    This spray is the best on the market By Latty
    I have used this spray to control the pavement ants that come in thru the cracks indoors and it works everytime. One time I had a big oribweaver spider in my window behind the screen. I sprayed it with one squirt and it kicked 3 times then fell to the bottom of the window. It was dead instantly. I also found a ant colony outdoors under my trash can and I just sprayed a light mist over them and they all died once again instantly. This spray is amazing. The liquid bait work really well to but they take 2 to 3 weeks to get rid of the colony. But once there gone they don't come back. Thank you for making something that really works.
    Review Rate
    Review posted on www.terro.com
    July 11, 2016
    Terrible nozzle--miss old nozzle with long tube By DeleneSC

    I have bought this product many times before, with the old fashioned "paint can" type nozzle. It also included a tiny 1/8 in. tube about 6 in. long that you insert in the nozzle for super precision so you don't get poison all over the place. This new button can clogged the first time. I shook the can as instructed. I did move the large button to the "on" position. It's terrible and I'm taking it back. Terro, bring can you PLEASE bring back the old style? Other customers, do you agree? Not buying again.

    Response From Terro®
    Lauren : Consumer Relations Representative

    Thank you for taking the time to share this feedback. At TERRO®, we aim to provide our customers with high-quality and reliable products. We regret that this spray did not meet those expectations and apologize for this experience. These comments and concerns have been shared with our Product Manager for review. Please feel free to contact our Consumer Relations Team at 1-800-800-1819 x 458 for additional assistance.

    Review Rate
    Review posted on www.terro.com
    July 31, 2015
    great stuff By jpmom
    I don't normally use sprays because they never seem to be as effective as the liquid bait, but we found this to be very impressive. With one spray it took care of all the little guys the were visiting my pantry. The only thing I would change is the spray pattern, as it sort of goes out in a circle and kind of gets on everything. If you had an option for a more narrow stream in tight quarters that would be very effective.
    Review Rate
    Review posted on www.terro.com
    June 18, 2015
    Best in Insect Killers! By poleymom
    I ordered Terro Liquid Drops after my friend saw the ant invasion I was having in my master bedroom window. She couldn't remember the exact name of the drops but knew it began with the letter "T". I searched the internet and found Terro Liquid Ant Killer very quickly. Read their website and ordered it immediately. Within a few days I received my purchase and following the instructions I put a drop or two of the liquid on cardboard pieces and set them in my bedroom window. The next day all the ants were dead and I haven't seen any since. Greatest Product EVER!!!
    Review Rate
    Review posted on www.terro.com
    August 21, 2014
    Amazon Review By L. Mountford
    I purchased this after checking with my vet about a safe-to-use-around-cats solution to my ant problem.

    I live in an area that is plagued by ants, usually a couple of times a year. I usually use the Terro PreFilled Liquid Ant Killer II Baits 6 Pack T300, also purchased on my vet's recommendation, and manage to get rid of them in a week or so. This year, I got most of 'em after 2 tries, but there were a few stragglers. I got impatient.

    Spritzed around the entry point where the ants seemed to originate. It killed the remaining ants, and I haven't seen a live one since (4 days ago). I didn't use much at all -- really, just a 1/2 second spritz twice -- and they're gone. No strong lingering smell, either. Remember, though, I started with the pre-filled liquid bait traps (2 left out for 1 week; then 2 more for another week), so I think I'd already decimated the colony before using the spray.

    At the moment, I'm ant-free. And I'm totally sold on the Terro line of ant control products. My cats and I are pleased. (My female cat has a special "chirp" for spiders and ants, different from her "OMG! there's a BIRD!" chirp, and always lets me know when they've made another appearance.)
    Review Rate
    Review posted on www.terro.com
    August 15, 2014
    Amazon Review By Mr. G
    Just a heads up this stuff is for regular ants not carpenter ants. Throws out a nice spray stream to cover a large area,

    You can however get this stuff cheaper at your local hardware store.
    Read All Reviews (17) Write a Review
    Q.is this product safe to use on carpet and leather like a car interior?

    Testing has not been done on these surfaces, as it is usually recommended for cracks, crevices, baseboards, etc. Test a small area first for staining.

    Q. I have an African grey parrot and sugar ants are coming in the house and getting in her cage I need to know a safe way to get rid of them without harming my bird and keep them out of the house

    When spraying this product, it is recommended to keep adults, children, or pets out of the treated area until the spray has dried. It is important to ensure that the spray does not come in contact with adults, children, or pets through drift.

    Our liquid ant baits can also be used indoors or outdoors, along ant trails or entry points to help prevent them from coming indoors. We recommend keeping the liquid baits out of reach of children and pets.

    Q.If I were to spray this in a hole on the wall suspected of nest, what if it did not kill off the colony as I had sealed the hole? will my wall be screwed?

    This spray is made to kill on contact and will not have any residual effect. Our TERRO® Liquid Ant Baits (Model #T300) however, are made to be taken back to the colony by the ants to kill them at the source. These can be purchased at the following link: http://www.terro.com/terro-liquid-ant-baits-2-pack. Please feel free to call us at 1-800-800-1819 x 458 with any additional questions.

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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.

    I need to knock out an ant invasion quickly – what do you recommend?

    We suggest using TERRO® Ant Killer Spray or TERRO® Outdoor Ant Spray - both products kill on contact and will continue killing for 6-12 weeks. And better yet, these sprays are also effective against cockroaches, spiders, crickets, scorpions and other unwanted insects.

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