Top 5 Best Outdoor ant Killer

Ants are probably the most common household insect, but most people don’t understand how to get rid of them. If you just see a few ants on the countertops, you may be inclined to let them be and not worry too much about how many more are hiding in back yard. What you may not realize is that you won’t get rid of the ants until you deal with their nest, according to They won’t just go away on their own.

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The ants will keep coming back and growing in population size until you do something about them. We have picked out a few products that can help you do just that.

What to Know before You Buy Any Ant Killing Products

Before you grab just any ant killer off the shelf, there are a few considerations you should keep in mind.

Kill the nest, not just the ants– First and foremost, you want an ant killer that allows the ants to get back to the nest and carry the poison there with them. You may not always be able to find the nest on your own, and you need a pesticide that will take care of that for you.

Get the right treatment for your ants– You also need to know the kind of ant you are dealing with. Terminix reveals that knowing the type of ant will allow you to better treat for them. Not all ant killers will treat for all types of ants, so pay careful attention to what bugs are listed on whatever pesticide you are interested in.

Protect your kids, pets and the environment– Another thing to keep in mind is that some pesticides may contain chemicals that are harmful to the environment, to your pets or to your household, and you need to know when it is safe to use them and when you should go with something else.


Top 5 Best Rated Outdoor Ant Killers

TERRO Ant Killer Plus


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This is a spreadable ant deterrent and killer, so it may not be as easy to use as some the other insecticides we list here that come in spray bottles, but it is very effective. By spreading the powder on the ground, near or over a nest, you can coat the ants with poison and get them to carry that poison back to their nest.

It is designed to only be used outdoors, and it kills a lot of insects very quickly. It can be used as a perimeter treatment to keep insects bay and to keep them from entering your house or property.


  • Great as a perimeter defense
  • Works very effectively against underground insects
  • No chemical cloud to deal with


  • Dust format may not be easy for everyone to use

Quick Kill Lawn & Landscape Insect Killer Granules


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This pest killer works very quickly, and it starts at the roots deep in the ground and works its way up, killing insects as it goes. Within 24 hours, most pests in your yard should be eliminated, with pests being repelled for weeks afterward.


  • Takes care of bugs on the ground and underneath the ground
  • Kills more than 50 types of bugs
  • You get a lot of use from one bag


  • Can only be used outside
  • May be difficult for some people to use

Demise Fire Ant and Insect Killer


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While it is labeled primarily for fire ants, you can use Demise on most household ants. The quick-acting products kills ants and coats them with a toxic substance that they carry back into their nest. Depending on the environmental conditions, it can last as long as six months. It is incredibly potent stuff, and you need to be careful about using it on or near your pets and allowing it to come into contact with your skin. Be sure to clean up after you use it or just keep pets and children away from the treated area.


  • Very potent
  • Long lasting
  • Destroys ants in the nest


  • Contains toxic chemicals that cannot be unsafe for pets and children

Bugs R Done Fly, Cockroach and Ant Killer


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If you want something that is much safer to use around sensitive animals and children, then this is the way to go. Bugs R Done has crafted a mostly natural treatment for ants and other bugs, and it uses potent citrus fruits to kill them effectively.

That citrus smell gives it a pleasant scent and ensures that you and your pets should not be bothered by the smell at all. However, the lack of toxic chemicals can also mean that it is not as potent as some of the competition, so you will have to decide whether you want to go for something that is environmentally friendly and safe or potent and toxic.


  • No unpleasant smells or staining
  • Made with natural ingredients and safe for kids and pets
  • Kills a wide variety of insects in the home


  • Can lack effectiveness

Quest Specialty 426001 Stormtrooper Fire Ant Killer


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This Stormtrooper spray is some of the most effective ant killer on the market, but it is also some of the most expensive. It releases a fast-acting foam that gets deep into the ants’ nest and takes out bugs you could not otherwise reach. It is meant to be used directly on the nest, so if you don’t know where the nest is, you may be wasting your time spraying this around your house.

It kills bugs very fast, and they usually won’t have time to take the poison back to their nest, so finding the nest is important. Terro says to look for where the ants walk to after finding a food source and to also keep an eye out for swarmers and wood shavings as signs of the nest.


  • Super powerful; kills bugs fast
  • Foam covers a large area quickly and effectively


  • Incredibly costly
  • Needs to be applied directly

Bayer Advanced 502790 Home Pest Control Indoor and Outdoor Insect Killer


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Bayer’s product works as a natural barrier, repelling insects from your home or yard and killing those that are already there. It works very fast and kills most pests on contact. It also works longer than most other sprays and pest killers. In ideal situations, it can keep pests out for as long as a year, but your results may vary.

It also leaves behind no stains and has very little odor, so you and your pets should not mind the treatment. It is made to kill a wide range of pests and not just ants.


  • Can work for up to a year after a single treatment
  • Kills bugs fast
  • Creates a barrier against new insects
  • Will not stain


  • Once you spray it, it stays there for a long time, leaving behind chemical traces

Final Thoughts

Keep in mind that sometimes the efficacy of a certain product can depend on where you live. There are certain areas, where the ants living there may be resilient to certain substances, while more sensitive to other chemicals. Therefore, if some product didn’t do the job, try using another one. Practicing trial and error, you should eventually find an ant killer that works for you. As always, read labeling carefully, and follow instructions strictly to avoid any safety issues.

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