Best outdoor ant killer

Choose The Best Outdoor Ant Killer

For the better part of their existence, ants are wired to constitute a nuisance in your yard, bite you, your unsuspecting kids, pets and even advance further to destroy your lawn. Their activities if not contained, can lead them to think they are welcomed and so are free to proceed into the main house. You sure know what it means having ants in your living room. The situation will be miles away from pleasant. What might be the best outdoor ant killer out there?

If you have been charting solutions to curb their excesses around your house and their presence freaks you out, then this review is for you. 

In this review, you’ll be furnished with the top 5 Best Outdoor Ant Killers and our own recommendation as the overall best. 

If you want to keep these annoying ants at bay, then read on. 

5 Best Outdoor Ant Killers 

Terro Liquid Ant Bait

This Terro liquid sugar ant bait is a premium choice in the total destruction of outdoor ants. With the bait as sugar, ants will be excited to run into their doom. It is made from the insecticide borax and works optimally within 24 – 48 hours. 

There are different kinds of outdoor ants and it takes care of them all, regardless of their nature. The effective powers of Terro in terminating the existence of outdoor ants is not limited by any weather condition. That’s a huge plus. 

All you have to do is to strategically position the liquid baits around your yard and especially in their trails where you are certain they will follow through and leave the rest of the job to the insecticide. 


It is weatherproof. 

Works on a wide variety of outdoor ant species. 

Can terminate ant colonies in 24 hours. 

Easy to set up.


The liquid bait can soil your environment. 

Requires regular checkup on the bait and surveillance.  

Amdro Home Perimeter

The Amdro Home Perimeter outdoor ant killer isn’t in a liquid form like the Terro but does the same work of decimating an entire ant colony regardless of their specie. It comes in the form of granules baited with 88% Hydramethylnon. With this chemical in it, bugs and ants are helpless when they come in contact with it. 

This ant killer targets the queen and so it keeps the ants alive long enough for them relay the juicy bait to her so they can all die in unity. With the queen dead, the game is over. You can sprinkle it around the perimeter of your house and prevent ants from gaining access to your house and even around your fence to ward off ants entirely. Since it’s not in liquid form, it won’t cause your environment to look sullied.


It can inhibit the spread of different species of outdoor ants around your yard. 

Easy to use and doesn’t sully your environment.

Targets the queen. 


The 24 – 48 hours results of the Terro can’t be assured here.

Sometimes you might need an extra spreading tool to disperse the granules around your yard.

Ortho Orthene Outdoor Ant Killer

The Ortho Orthene outdoor ant killer is specifically designed for fire ants that make up some of the most deadly insects you can ever have around your home. One sting or bite from this insect can cause your body to react to the effect, which can be a very sore experience for you and deadly to sensitive persons. 

The Ortho brand assures you that a single bottle can terminate up to 162 mounds of this nasty insect and in addition; murder their queen. It’s a money-back guarantee of the annihilation of the fire ant colony around your yard. 

All you need do is to sprinkle this insect on the mound, about a tablespoonful should be enough and then you walk away and let it do its job. You don’t need to water-in or scatter the mound for it to effective, just sprinkle and retreat. 

In the next couple of days, you can relax freely in your hard without having to run back indoors because the ants say you should evacuate. 


Within hours after application, it starts acting.

No watering-in.

The queen is killed. 

Easy to apply. 

Destroy mounds in three days.


Scattering the mound limits its powers. 

Could be dangerous to pets and kids in contact with it.

Ortho Home Defense Max Insect Killer Granules

Ortho Home defense is an insect killer super pack. They destroy pests in general and not just ants. From noisy crickets to spiders and from ticks to moles, the ortho home defense is truly a defender. If offers three months of protection for your home. Three months of uninterrupted fun around your yard from insects. 

If your lawn is heavily infested by pests, this should be your ideal choice. One application can get rid of them and keep them in a comfortable distance away from your home for about three months. 

However, if fire ants are your major trouble, you should consider Ortho Orthene for a thorough job. Fire ants are smart insects and can maneuver their way to safety from insecticides that are general pest killers.  

It needs to be watered-in and allowed to dry while the granules can be applied around your perimeter, lawns and flowers. 


Kills more than just ants. 

Easy to use. 


Can’t be used in vegetable gardens. 

Fire ants can escape their onslaught.

Bayer Advanced Ant Killer Plus

Beyond just ants, the Bayer advanced outdoor ant killer can also terminate the existence fleas, ticks, mites, spiders and cockroaches around your home. It also offers three months of protection from outdoor ants and other insects. 

A single bottle can cover up 1,500 square feet of your space, wiping out every insect that comes in contact with it. It comes in an easy-to-use shaker bottle that you can use around the perimeter of your house and on your lawns. 


Easy-to-use shaker bottle.

Wipes off the entire colony or mounds.

It offers three months of protection.

Kill different types of insects, not just outdoor ants.


It takes a longer time to kill the insects.


The Best Outdoor Ant Killer according to our assessment is being given to the Terro liquid Bait Outdoor Ant Killer. It offers the most prompt results and is weatherproof. It can also kill different species of outdoor ants. Its downsides can be managed and termed negligible.