TERRO® Wasp & Hornet Killer

Model #: T3300-6

27 reviews
0 5 3.9
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  • Kills wasps, hornets, yellow jackets & mud daubers
  • Foam spray coats nest for a complete kill
  • Powerful spray reaches nests up to 20 feet away
  • For indoor or outdoor use
Cannot Ship To: AK, HI

Product Description:

Wasps and hornets strike fear in many, but with TERRO® Wasp & Hornet Killer, you can kill these dreaded pests on contact.

TERRO® Wasp & Hornet Killer is an entrapping foam spray that coats nests for a complete kill. The entrapping foam not only kills wasps and hornets inside the nest, but it also remains on the nest and kills unsuspecting insects that have the misfortune of returning.

Going the Distance

Nests are often located in hard-to-reach places, so you’ll appreciate that this wasp and hornet aerosol spray delivers a powerful jet spray that reaches up to 20 feet away. This also allows you to keep a safe distance away from the nest while spraying.

Treatment Tips

When treating nests, spray at sunrise or dusk when insects are least active. Stand a safe distance from the nest - do not stand directly underneath it. Spray the nest opening until soaked. Then spray the rest of the nest. The insects will fall to the ground and die.

After spraying, wait up to 24 hours before removing the nest.


For Indoor and Outdoor Use

Protect yourself from wasps and hornets, indoors and outdoors, with TERRO® Wasp & Hornet Killer. Here are some tips on where to spray:

  • Use outdoors under eaves, near window frames, doorways, outdoor play areas and picnic areas.
  • Use indoor in attics and anywhere nests are built. Do not spray around exposed foods.
  • To prevent insects from entering home, use this wasp and hornet aerosol spray around areas where insects enter, such as gaps around outdoor plumbing and vents, cracks and crevices in foundations, and along sills and ledges.


View video for tips on how to get rid of wasps and hornets with TERRO® Wasp & Hornet Killer


Product Features

  • Foam spray coats nests for complete kill
  • For indoor and outdoor use
  • Powerful jet spray reaches nests up to 20 feet
  • Water-based formula
  • Spray nest at sunrise or dusk when insects are least active
  • 1 lb 3 oz aerosol can
  • What’s in the Box

  • 1 lb 3 oz aerosol spray can
  • Specifications

  • Contains Tetramethrin [(1-Cyclohexene-1,2-dicarboximido) methyl 2,2-dimethyl-3-(2-methylpropenyl) cyclopropanecarboxylate] 0.200%; Sumithrin (3-Phenoxybenzyl-(1RS, 3RS; 1RS, 3SR)-2, 2-dimethyl-3-(2-methylprop-1-enyl) cyclopropanecarboxylate 0.200%; other ingredients 99.60%
  • Videos

    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
    July 7, 2020
    Five stars… All the way By Jo
    This stuff is great! I have a lot of wasp nest in front and back of my home on when I spray the nest, The wasps stay away. I have recommended it to all of my family and friends and they love it as well. When I order… I Purchased a case and can enjoy free shipping as well It was a marvelous find for me And my family and friends.
    Review Rate
    Review posted on www.terro.com
    June 27, 2018
    Produces a useless fog By TonyL

    Useless. I needed to get at a nest that was about 10 feet overhead. This stuff came out like a cloud of spray paint, went less than 8' and then started drifting back at me. Thankfully, I had a can of another brand in my coat pocket, just in case. The other product worked exactly as advertised, easily shooting 16 - 20 feet and taking out the nest I needed to kill. I've used lots of foam and "stream" wasp & hornet sprays over the years and they all worked great. I might guess that I got a defective can, but other reviewers had the same comment I did. So, either Terro has terrible quality control or a defective design.

    Response From Terro®
    Jennifer : Consumer Relations Representative

    Hello Tony,

    Thank you for providing this feedback! We are very sorry to hear of this unusual experience and would like to learn more about what occurred. For further assistance, please contact us directly. Our Consumer Relations Team can be reached at 800-800-1819 x 458. We are happy to help!

    Review Rate
    Review posted on www.terro.com
    July 31, 2017
    Great product By Justin

    Bought this product to get rid of a ground wasp problem. As soon as I sprayed it in their holes they are dead and not back any longer. This stuff definitely works great!

    Review Rate
    Review posted on www.terro.com
    December 4, 2016
    At a safe distance By islandkimmi
    This is a great product. The foam spray has enough range, so you can safely spray wasp nests and make a speedy getaway if necessary. As far as I can tell, it also has a 100% mortality rate. Best. Products. Ever.
    Review Rate
    Review posted on www.terro.com
    August 15, 2016
    excellent product By Chet
    I sprayed a hornets nest that was larger than a softball 8 days ago and have seen a
    hornet since then. I completely covered the nest with foam and after it dried it couldn't believe it worked so good. I'm 76 years old and if I can make it work anyone can
    Review Rate
    Review posted on www.terro.com
    August 11, 2016
    Wish it sprayed further By Gary

    I bought two cases and have used several cans so far. It does not spray as far as other brands and it sprays in too wide of a pattern. If there is any wind at all it goes all over instead of reaching the nest. Up closer 8 ft - 10 ft it will foam a nest over pretty good, but you still see the wasps crawling around for several minuets. I'm kind of disappointed in it. I am allergic to to bees, wasp, hornets and I wanted something that sprayed 20 ft or so and would encapsulate the nest killing them instantly. 8-10 ft makes me nervous spraying the nest. There was another brand that worked better that is no longer produced, if terro wants to know about it email me an I will give you the name of the discontinued competing product.

    Response From Terro®
    Patty : Consumer Relations Representative

    Hello Gary, We appreciate the time taken to provide this feedback and apologize for the experience. This product should spray up to 20 feet away. If there is wind, make sure you are spraying with the wind to your back to avoid spray drift. Please give our Consumer Relations Team a call at 800-800-1819 x 458 for additional assistance.

    Review Rate
    Review posted on www.terro.com
    April 16, 2016
    Poor Spray By RevRenzo

    May be great product but no way it sprays 20 ft. Perhaps 6-8 ft. is more realstic. Very disappointed as I needed to reach some high places to kill wasp nests.

    Response From Terro®
    Lauren : Consumer Relations Representative

    Thank you for sharing this feedback. We apologize for this recent experience with this spray and would like to offer assistance as it is not a typical occurrence. Please contact our Consumer Relations Team at 1-800-800-1819 x 458 with any questions.

    Review Rate
    Review posted on www.terro.com
    January 27, 2016
    Shipping arrived on time. By JackStar
    Great service. I know the active ingredient and sought it out.....finally found Terro. Bought two cans of the wasp and hornet..
    Terro termite killer is great and I'm guessing this stuff will be too as they chose the correct active kill chemical.
    Review Rate
    Review posted on www.terro.com
    June 21, 2015
    Revision to prior statement By xxxx
    When I initially was asked to write a review I said that I ordered a product but it was never received. So today I can say that TERRO sent my order very quickly. This is a fantastic product. Sometimes things happen that are beyond our control.
    Thanks TERRO for honoring the sale and quickness of correcting......
    Review Rate
    Review posted on www.terro.com
    August 21, 2014
    Amazon Review By pseudonym
    We used this to completely soak a large paper wasp nest outside our house in the late evening, and by the next morning there were no wasps to be seen, except for a few dead ones on the ground beneath the nest. Can sprayed a long distance as label indicates. Despite the advertised claim of safety as long as it is kept away from areas where food is eaten or prepared, I'm not sure that I would want to use *any* wasp spray indoors.
    Read All Reviews (27) Write a Review
    Q.I would like to use this on the ground (digger) wasps that are in my yard and around my house. Will the spray kill the grass since the nests are underground? Also will this stop them from coming back? We have been dealing with them for 3 years now and what we were using was killing them but they always come back.

    This product is not recommended for digger wasps.

    Q.does this kill the ground wasp larvae

    This product is designed to kill wasps, hornets, yellow jackets & mud daubers, but has not been tested on wasp larvae.


    Yes, this product can be used under eaves, near window frames, and in cracks, holds and crevices where insect activity is seen.

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    All About


    There are more than 30,000 identified species of wasps, which fall into one of two categories: solitary or social. The majority of these species are solitary wasps that live and operate alone. There are only about 1,000 of the social wasps species, yet they are the ones people encounter the most. Social wasps such as hornets, yellow jackets, and umbrella or paper wasps, live and work together in colonies.

    More About Pantry Wasps


    I’m terrified of wasps! Where should I spray your Wasp & Hornet Killer to keep them away?

    To prevent wasps and hornets from entering your home, we recommend spraying TERRO® Wasp & Hornet Killer in outdoor areas such as cracks and gaps around outdoor plumbing and electrical penetrations, cracks in foundations and along window sills. It’s also a good idea to spray under eaves around doorways and near play areas. Indoors, the spray can be used in attics and anywhere nests are built.

    What is the best time of day to spray wasp and hornet nests?

    Spray nests with at sunrise or dusk when insects are least active. TERRO® Wasp & Hornet Killer’s entrapping foam shoots up to 20 feet away which allows you to keep a safe distance away from the nest when spraying. To use, spray the nest opening until it is soaked and then spray the rest of the nest. After spraying, wait up to 24 hours before removing the nest and discarding.

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