7 Best Fire Ant Killer for Lawns in 2021

Today I’ll talk to you about best fire ant killer for lawns, parks, golf courses, or schoolyards.

Do you fear that the anthills may damage your mower or just need to restore your grass? 

For quick results in killing fire ants (red imported fire ant), use corn-grit baits like Amdro Pro with hydramethylnon. So, let’s get started! [14 /]

7 Best Fire Ant Killer for Lawns 2021

Insect growth regulator (IGR) baits are suitable for long-term control as they have higher efficacy.

1. Syngenta – A20380A – Advion Fire Ant Bait – My Top Pick

Advion Fire Ant Bait (with 0.04% Indoxacarb), will control the whole colony of big-headed ants, pavement ants, or fire ants (in all their life stages) within 72 hours. 

Syngenta - A20380A - Advion Fire Ant Bait Check Price on Amazon

Apply the bait (twice a year) directly on fire ant mounds or through the broadcast method. So, don’t allow your comfort be disturbed by Fire Ants.

Note that since Advion Fire Ant Bait lacks IGR, it is important that you re-apply the bait in 2-3 weeks. However, contact your vet if you need to use this bait for grazing pastures for cows, horses or goats.

For maximum effectiveness, you should use the Advion Fire Ant Bait when the soil temperatures are over 6 degrees, a period for the foraging of ants. Choose the Best Fire Ant Killer for Lawns and Big Fields.

All you’ll need is to pop the top of Advion Fire Ant Bait container. It has two sides, one with like a saltshaker opening (which I prefer using) and the other with a big open side.

So, now walk around your lawn or yard, since this is a bait and thus you don’t have to target the ant mounds. Walk back and forth pouring the bait while squeezing the bottle slightly and the baits will drop in bits as you go.

Related: Best Squirrel Repellent 

2. Ortho Orthene Fire Ant Killer for Yard – Treats 162 Mounds – Runners-Up 

Next up is this Ortho Orthene (with 50% Acephate), which I highly recommend for yards and decorative plants. This product has a long residue effect, which is about 6 months. 

Ortho Orthene Fire Ant Killer for Yard - Treats 162 Mounds Check Price on Amazon

Also, it has a quick knockdown effect (5 minutes) and hence it’s great for short-term ants control, including red harvester ants. 

Ortho Orthene will kill the fire ant queen in 3 days, after which clearing the whole colony and preventing a re-infestation will be very simple.

Luckily, for this ant killer, you won’t require water for application. Simply pour about 1 tablespoon of this Ortho Orthene over about 162 mounds and you’re done. However, unlike the Advion Fire Ant Bait, you must pour the Ortho Orthene directly over the ant mounds. 

3. Taurus SC Insecticide or Termiticide – Runner-Up

Some lawn care enthusiasts swear that imitaclorprid and Fipronil are the best active ingredients for controlling fire ants in your lawn. Luckily, fire ants won’t detect the Taurus SC and they’ll carry it back to their nests and kill the whole colony. 

Check Price on Amazon

One of my friends used Taurus SC for their exterior landscape last year. So, this product cleared all the ants but he’s said he’ll apply again in spring just to be safe.

Therefore, he reports that either Bifen XTS or Taurus SC will be a great take for controlling fire ants, nesting bugs, and wasps.

4. Extinguish Plus Fire Ant Bait-4.5 lb 55555354 – Runner-Up

Extinguish Plus contains IGR, which prevents fire ant reproduction and Hydramethylnon that works to kill the colony. Hydramethylnon is a fast acting chemical that will effectively and quickly kill the current colony.

Best Fire Ant Killer for Lawns Check Price on Amazon

However, IGR is a slower acting chemical that will eliminate the fire ants over the long term. IGR achieves this by barring rebound and making the queen unproductive.

Therefore, using the Extinguish Plus bait will enable you to effectively employ the two-prong method of fire ant elimination from your lawn or big fields.

The formulation is fast acting and will kill the fire ants within minutes or hours. Further, it will act to kill fire ants both in the indoor and the outdoor spaces.

Also, the use of the two-prong method will allow you to eliminate both the colonies that you can see and those that will be in hiding while applying the chemical.

Fire ants are named so due to their painful bites and characteristic red color. They attack animals and plants and damage structures, and appliances – especially those with electrical currents.  Previously we tackled how to control ants in your kitchen and bathroom.


5.  Ortho Fire Ant Killer Max Broadcast 11.5lb Granules

Ortho Orthene is a highly potent Fire Ant Killer that will kill the colony’s queen and prevent molds from developing, both of Red Harvester Ants and Fire Ants.

 Roll over image to zoom in Ortho Max Fire Ant Killer Broadcast Granules (Case of 4) Check Price on Amazon

The concentrate is easy to use as you’ll only need to sprinkle the granules on your lawn and you’ll not need to add any water.

Further, Ortho is ready to use and will kill the fire ants and their queen within hours. Also, do not worry about the bad smell in your lawn or fields since the fire ant killer is odorless.

Ortho Orthene has Acephate as the active ingredient that combines to form a fast-acting formula to eliminate the fire ants within hours. 

6. Amdro Yard Treatment Kills Fire Ants Fire Ant Bait Granules 5lb

Amdro Fire Ants Killer has an insect growth regulatory (IGR) and other effective ingredients like Hydro-mechanics (Digestive Poison) that will allow you protection against fire ants all season.

Amdro 100511025 Fire Ant Yard Treatment Check Price on Amazon

Interestingly, the insects will consider the hydro-mechanics bait like food and thus take it back to their residence or sharing. Therefore, all the fire ants and its queen will die upon eating the bait.

The pack will treat about 10,000 sq. ft. killing the mold and barring any more molds from developing. Also, hydro-mechanics will sterilize any incoming queens. This will stop or reduce the reproduction capacity of the invading colony.

7. Ortho 0259010 Fire Ant Killer Mound Bait

Ortho 0259010 Mound Bait Fire Ant Killer will help you kill the ants and their queen in just a few minutes.

Ortho 0259010 EMW7535081 Check Price on Amazon

Also, you’ll not need to water after applying on your ornamental plants, lawns or trees with its active ingredient being Acephate and Indoxacarb.

The ant Bait will a few minutes and thus destroy the colony in the mound and kill the queen. Hence, Ortho 0259010 Mound Bait will look like food to the Fire Ants and thus attract the insects.

The Fire Ants will, therefore, get poisoned, the mound will be destroyed and queen killed, which will prevent further reproduction in the fire ant colony.

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