The best product to kill ants in your lawn is TERRO T901-6 Ant Killer Plus Multi Purpose Insecticide.
Another great ant killer is TRIAZICIDE Insect Killer for lawns.
The cause of ants in the lawn is usually dry, well drained soil that has low water holding capacity.
Turfgrass can also attract ants in lawns and they also naturally just love to build mounds in lawns where they can do so.
Many ants are attracted to sources of standing water and easily accessible food sources, like trash cans and other forms of debris.
If your yard is messy, it may be a prime target for an ant colony to grow.
As ant colonies grow, they usually need to start foraging for more food sources.
Ants are not only attracted to food and water. An abundance of ant mounds in your yard implies the ants have found an ideal area to establish their colonies.
Probably, your lawn has many undisturbed spots or offers suitable soil conditions for nesting.
Ant tunnels can cause soil to dry out.
Because the foraging ants like to eat whatever they come across, this does mean they could potentially be feeding on freshly laid grass seeds if you are planting a new lawn.
If an ant colony becomes too large it can suffocate grass.
In the process of building tunnels, the ants can break off roots and root hairs or increase the desiccation of the soil.
In addition, the turf in the affected area may become thin and unattractive.
Large mounds can also smother grass and even damage lawn mower blades.
Ants are annoying inside of your home, and even when they're outdoors, ants can damage your yard.
Field ants, farming ants, and army ants can all damage your grass if the situation is left untreated.
Some of the best ant killers for lawns include.
Terro Liquid Ant Baits.
Raid Multi Insect Killer.
Terro Ant Dust.
Mighty Mint Insect and Pest Control Peppermint Oil.
Ortho BugClear Insect Killer.
If there isn't a noticeable anthill, you may have to do some digging.
Ants build nests under things like logs and bricks.
Check your yard for items that could act as shelter for an ant colony.
Fire ants and carpenter ants like to build nests in rotting wood.
Ants commonly nest in hidden places.
So if you can't get to the actual source of the nest, you can use bait stations to destroy the colony.
Bait traps attract ants with the smell of food and get them to take a slow-acting poison back to the nest.