Best Outdoor Ant Killers – Top 5 Ultimate Reviews and Buyer’s Guide

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Inga Cryton
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The good thing is that you can eliminate ants in your yard using ant killers. Lucky for you, I have compiled this in-depth buyer’s guide to help you purchase the best outdoor ant killer product.

Best Choice
Indoor/Outdoor Insecticide
Indoor/Outdoor Insecticide
Best Ant Control and Killer Concentrate
One simple application of 7.9% Bifenthrin product in your lawn can get rid of all kinds of insects in your outdoor space for up to 3 months. Just one bottle of will be enough to treat over 44,000 square feet.
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Top 3 Outdoor Ant Killer Products in 2021 Comparison Table:

Our #1 Rated
Concentrated Indoor/Outdoor Insecticide review
Concentrated Indoor/Outdoor Insecticide
  • Kills ants by targeting the peripheral and central nervous system
  • Gets rid of ants and other kinds of insects in your yard, garage, basement
  • Eliminates ant grubs
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People's Choice
Spectracide Acre Plus Triazicide Insect Killer Granules review
Spectracide Acre Plus Triazicide Insect Killer Granules
  • Kills on contact
  • Kills lawn insects
  • Treats over 44,000 square feet of lawn
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Maxforce Complete Granular Insect Bait review
Maxforce Complete Granular Insect Bait
  • Gets rid of all kinds of ants
  • One good application is enough to eliminate all ants
  • Safe to use in a home with pets
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Top 5 Best Outdoor Ant Killers on the Market Reviewed

Since the market has a wide array of ant killer products, it can be hard for you to select the best.

After much research, there are definitely some products that stand out more than others. And the winner is Compare-N-Save Concentrated Indoor/Outdoor Insecticide.

1. Compare-N-Save Concentrated Indoor/Outdoor Insecticide – Best Ant Control Termiticide for Your Yard

See More ImagesCompare-N-Save Indoor/Outdoor Concentrate
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According to Living History Farm, insecticides work by opening up the sodium ion channels in the nerve cells or neurons of insects, making them fire up spontaneously. This later causes the insect to go into spans and then die.

How Does It Work?

Compare-N-Save ant control product works the same way, as its major active ingredient is bifenthrin 7.9%, which is an insecticide that kills ants by targeting their peripheral and central nervous system. One simple application of this product in your lawn can get rid of all kinds of insects in your outdoor space for up to 3 months. In addition to this, just one bottle of this product will be enough to treat over 44,000 square feet.

How to Use

Applying Compare-N-Save Indoor/Outdoor Concentrate is quite easy as all you are required to do is apply it around the affected area in your yard, garage, or basement. Afterward, people and pets can continue using the treated area as long as the product is well watered in and dry.

  • Gets rid of all insects in your outdoors for up to 3 months.
  • Easy to apply.
  • Not ideal for use in fire gardens.

2. Spectracide Triazicide – Best Ant Killer Granules for Lawns

See More ImagesSpectracide Triazicide
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Looking for a way to get rid of ants living on your lawn? Apart from ants, Spectracide Triazicide targets all insects that could be living on your lawn such as ticks, crickets, spiders, and fleas. It also provides positive results when you are dealing with a large ant infestation in your lawn.

How Does Spectracide Triazicide Work?

Spectracide kills on contact by targeting the peripheral and central nervous system of ants. One pack of this product should be able to treat a large area of over 44,000 square feet. You just need to apply around the foundation of your home during an ant infestation and you will be good to go.

One major benefit of this product is that people and pets can continue using the space as far as the product is properly watered in and dry. For the best possible experience, consider applying Spectracide to flowers, ornamentals, and most importantly, the whole lawn area.

How to Use

Spectracide Triazicide is probably the easiest to use ant killer. All you have to do is get the granules from the pack and distribute them around the area that you would like to treat.

  • Very easy to use.
  • People and pets can use the treated area as long as Spectracide is watered in.
  • Kills most ant species.
  • It is not recommended for use in vegetable gardens.
  • It barely works for getting rid of fire ants.

3. Maxforce Complete – Best Ant Killer and Bait

See More ImagesMaxforce Complete
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Maxforce Complete Granular Insect Bait provides you with months of protection against all kinds of ants and insects such as fleas, spiders, and ticks. Therefore, if you are in search of a product that is going to eliminate every kind of insect from your home, then Maxforce Complete is an option that you should consider. The active ingredient in this ant killer and bait is hydramethylnon 1%, which can be used both indoors and outdoors.

How Does Maxforce Complete Work?

Since Maxforce Complete is made up of a combination of simple sugars, proteins, carbohydrates, and fats, it is able to attract ants, which consume the bait that later kills them.

How to Apply
You should sprinkle this product around structures where you might have seen many ants. You should pour it evenly in a 1-2 foot wide band. You can use it to treat areas such as driveways, patios, porches, flowerbeds, woodpiles, and garbage receptacles.
  • Works fast to kill ants.
  • Can be used to create a perimeter around the outdoors to keep ants out.
  • Might not eliminate all kinds of ants.

4. Terro – Best Outdoor Liquid Ant Bait

See More ImagesLiquid Ant Bait by Terro
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One of the best outdoor ant killers is Terro Outdoor Liquid Ant Baits. These baits are usually the go-to choice for many individuals. Terro is sold in a 1-oz pack of six and every station is pre-filled and ready to use. Terro baits work by attracting and killing ants lingering in your outdoor home area. The product has been proven to kill different species of household ants outside your home before they even get into the house. Terro can also be used for large ants infestations.

How Do Terro Liquid Baits Work?

Similar to other liquid baits in the market, Terro works by killing ants in a slow manner. This is achieved through the interference of the ants’ digestive system, which then kills them. The product is quite effective because this slow killing mechanism provides a chance for worker ants to transport the bait to the colony and the queen.

Using Terro liquid baits is quite easy and you should not have a problem applying them on your outdoors. All you have to do is place the stakes on the ground and the ants will be attracted and carry them to their nests. The only major thing to do here is to place the stakes where you see a lot of ant activity.

What to Know Before Using
One thing you should know prior to using Terro liquid baits is that you should place them out of reach of pets and kids, as they can be quite toxic. Apart from this, the liquid can cause a mess in case it spills out and can cause stain on concrete.
  • Easy to use, as all you have to do is place the stakes on the areas with the most ant activity.
  • Eliminates an entire ant colony.
  • Pre-filled for easy use.
  • Can cause stains on concrete.
  • Can be toxic to kids and pets.

5. AMDRO – Best Outdoor Ant Killer Granules

See More ImagesAMDRO Ant Block 12oz pack
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AMDRO ant bait granules work in the same way as Terro liquid baits. The granules attract ants to them, and they carry them back to their nests and eliminate all ants. The main active ingredient in AMDRO is hydramethylnon, which eliminates all species of ants. The main benefit of using AMDRO is that it creates a barrier around your house, which offers you with enough protection against all kinds of ants for a period of more than three months. How great would it be for you not to worry about ants for such a long time?

How Does AMDRO Work?
Applying AMDRO is quite easy and you should not have an issue with this process. All you have to do is pour the liquid around your yard, especially those areas you have noticed a lot of ant activity. After that, wait for the product to work its magic. You should not see any ants within one week after application.
  • Kills ants slowly, providing time for them to get the bait to the entire colony.
  • The treatment lasts for three months.
  • One bottle of AMDRO can provide you with multiple treatments.
  • Unlike other methods, it takes a very long time to get rid of all ants.

What is the Best Outdoor Ant Killer in October, 2021? – Your Expert Buyer’s Guide

When it comes to selecting the best outdoor ant killer, you will realize that you have very many options to choose from. You might thus easily get overwhelmed when selecting a good outdoor ant killer that will be effective for you. It is for this reason that I have decided to compile this buyer’s guide to help you make a good purchase decision.

Best Killer Based on the Type of Ants You Want to Eliminate

The first major factor that you have to consider when purchasing an outdoor ant killer is the type of ants you want to get rid of. Just like other creatures, ants come in a wide array of species that may have distinct reactions to different ant killers. It is for this reason that you want to have a good idea of the ants you are dealing with to ensure you pick the right ant killer.

Among the aforementioned products in this article, I have seen that Bifenthrin Concentrate offers the best possible results for dealing with a wide array of ants such as carpenter ants, red wood ants, black garden ants, bullet ants, and argentine ants. Therefore, if you are looking for a product that works for most ants, then Bifenthrin is the best choice for you.

Bait vs Contact Ant Killers

If you look at some of the aforementioned ant killers like Maxforce Complete, bait is implemented to get rid of ants and other insects that may be lingering in your outdoor home area. The reason why bait is recommended is that it attracts ants, which ingest the bait and then transport it back to their colony. This means that bait has the potential to eliminate a whole colony by destroying the queen.

Another reason why bait is recommended is that it is made to taste like food. It, therefore, entices ants, which bring it back to the queen and other members of the colony. Immediately the queen consumes the bait, the whole colony perishes. The bait is designed to kill slowly, meaning there will be a delay time for the worker ants to get the bait back to the colony.

Despite this, bait takes quite some time to get rid of ants. It might even take several weeks or months to eliminate a colony. This is where contact killers like Bifenthrin Concentrate and Spectracide Triazicide come into play. These kinds of products kill instantly, meaning no time wasted. They can thus eliminate a colony of ants in a very short time

Liquid vs Granules

Another problem that you will face when selecting the best outdoor ant killer entails choosing between liquid and granular ant killers. If you experience this dilemma, then it is good to note that the targeted use of the product will be the determining factor.

  • Liquid Ant Killers
    Liquid ant killers like Bifenthrin come in concentrated forms, meaning you only need to apply a limited amount to achieve the best possible results. Apart from being economical, liquid ant killers are great for use in the outdoors because the liquid soaks in, killing all ants crawling around. To achieve positive results, consider applying Bifenthrin Concentrate in the morning or evening to prevent evaporation.
  • Granular Ant Killers
    Granular ant killers like Spectracide Triazicide are mostly used to control outdoor ants. This ant killer is thus ideal for treating individual ant colonies that sprout up around the yard. For the best results while using this product, be sure to treat the entire lawn infested with ants.

Natural vs Chemical-Based

When looking to eliminate ants from your outdoors, you will have two main options – natural and chemical-based ant killers. This part of the article analyzes these different approaches towards outdoor ants’ elimination.

  • Natural Ant Killers
    In the hope of trying to avoid cons like toxicity, homeowners may prefer natural approaches to ant control. Some natural methods include treating with borax, applying diatomaceous earth, and pouring boiling water down the anthill. The main advantage of natural ant killers is that they do not have any negative effect on you or the environment. However, the only issue with these techniques is that they are not very effective, as they do not have an active ingredient proven to kill ants and their larvae.
  • Chemical-Based Ant Killers
    Chemical-based ant killers are the go-to product for many homeowners. I have had success with chemical-based ant killers such as Bifenthrin Concentrate and Spectracide Triazicide. Such ant killers typically contain an active ingredient proven to eliminate ants such as Bifenthrin, which is the main active ingredient in Bifenthrin Concentrate. On the other hand, Spectracide Triazicide contains gamma-cyhalothrin, as its main ingredient. This compound has been proven to kill a wide range of insects including ants. Chemical-based ant killers are readily available, strong, and fast-acting. They are thus more effective compared to natural ant killers.

Outdoor Ant Killers in the Garden

Despite the fact that ants are beneficial in the garden, an infestation can lead to damage. It is therefore important to control ants immediately you see them in your garden. When it comes to finding a good remedy, you have to implement ant-control options that are not going to cause damage to the plants or have a negative effect on individuals that will be consuming them.

  1. Insecticides
    Spraying insecticides is a great way to kill outdoor ants. When selecting an insecticide, you need to go for a safe product to ensure no damage to your garden. The best remedy for this purpose is Bifenthrin Concentrate.  The main reason why this product works is that it is toxic to ants but not people or the garden. You can apply Bifenthrin Concentrate on the infested part in your garden or directly to the nest for an even better experience.
  2. Baits
    When looking for a long-term solution for outdoor ants, baits happen to be more effective than insecticide sprays. Since baits are designed to taste and smell like food, ants are attracted to them and take back to the colony and the queen. After a few days, the whole colony will be eliminated. A bait-based ant killer like Spectracide Triazicide has a low toxicity rating, meaning that it does not pose any risk to you or the environment. This makes it ideal for use in the garden.

Best Killer Based on Cost

Ant killers are of different kinds and thus come at distinct prices. It is thus important to take into consideration the price of your preferred ant killer. Although you might not want to spend a fortune to get the best outdoor ant killer, it is good to note that you get what you pay for. However, this does not mean that you go for the most expensive product; just choose a product that works best for you.

In this product review, I have listed five different products that come at different prices. Bifenthrin Concentrate happens to be the most expensive while Spectracide Triazicide is the cheapest on this list. Your preferred product will obviously depend on other factors like those that I have previously talked about in this article. So, choose the product with the best performance and effectiveness.

Frequently Asked Questions

Are Ant Killers Safe to Use Around Pets?

If you have pets that go around your home’s outdoors or yard, it might not be a good idea for you to use commercial ant killers. The reasoning behind this is that some ant killers are made to smell like food. They can thus attract your pets to consume them. Once this happens, your pet might be faced with a serious health condition or even die.rnrnTo reduce any risk, consider deterring your pets from accessing the treated area during the treatment period. This is better because you can always allow your pets back to the treated area once the product has settled. If you still want your pets to access the outdoors even when treating to kill ants, consider using natural ant sprays that are made from non-toxic ingredients. Although it is not the best outdoor ant killer, a natural spray will still get rid of ants while ensuring safety for your pets.

Are Ant Killers Safe to Use Around Livestock?

According to NC State Extension Publications chemical application is the most effective way to get rid of ants in the outdoors. However, if you have livestock around an area that you would like to treat, you might want to be cautious to ensure your animals are not affected. It is good to note that baits and insecticides are effective for ant control in the outdoors. However, you should not allow livestock to feed on the treated grass, lawn, or sod clippings.

Do Ant Killers Work When it is Raining?

The use of outdoor ant killers is not recommended when it is raining, as the water can wash away the insecticide or bait granules. So, if you want to achieve the best possible results, consider not applying the product during wet weather.

Do Ant Killers Get Rid of All Types of Ants?

There exist thousands of ant species and it can be hard for you to know the exact species that has invaded your outdoors. However, some common ant species include fire ants, bullet ants, carpenter ants, argentine ants, pharaoh ants, and black garden ants. The good news for you is that the best outdoor ant killer should be able to eliminate most of these ants, as long as you apply the product correctly.


An ant infestation in the outdoors not only causes structural damage, but ants can also have negative effects on your health. Some ant species can spread diseases such as typhoid. It is because of this and many other reasons that you should eliminate ants in your home immediately you see them. To do this, consider getting yourself any of the aforementioned best outdoor ant killer. The products explained in this article are not only easy to use but are quite effective in getting rid of ants.

Apart from the aforementioned products, you should also consider checking out new ant killing technologies being tested to bring more efficiency and safety in the elimination of ants. For instance, Purdue University is testing the use of hydrogel to get rid of Argentine ants. More tests are being conducted and you could be seeing products with hydrogel in the market very soon.

You can find further details of Ants Control here.

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