Step 1: Combine 1 tablespoon of liquid dish soap or ¼ cup of Castile soap for every quart of water. You can add canola oil, olive oil, or vegetable oil to make the mixture even more effective. Step 2: Spray soapy water directly on any ants you see outside the nest to kill them on contact.
Diatomaceous Earth is one of the most effective ant-killers out there, and placing them in the ant entryways can solve the problem of “how to get rid of ants permanently”. Diatomaceous Earth is made from remains of diatoms. Basically, by sprinkling them, ants dry and die.
White Vinegar
When mixed with water, white vinegar turns into an acid that will eat away at ants' exoskeletons. Their bodies won't be able to handle the acidity of the vinegar. Using vinegar to kill ants in your yard is simple. You'll need to make a 50/50 mixture of vinegar and water and pour it down anthills.
Mix a 50/50 solution of vinegar and water in a spray bottle. Spray it directly on the ants to kill them, then wipe up the ants using a damp paper towel and discard them. You can also use vinegar and water as a deterrent; spray it around your windowsills, doorways and other places where you see ants coming inside.
Use soapy water
This concoction has been proven to aide in getting rid of ants outside because the heat and soap will kill the ants and prevent them from escaping. In order to do this correctly, you must mix 1 to 2 teaspoons of liquid dish soup with a gallon of warm water.
Because Windex doesn't work as a repellent, it's no more effective at getting rid of the occasional bug than using a broom to shoo the critter outdoors or a paper towel to squish it. You're better off saving the cleaning solution for its rightful use.
Boiling water
If you notice ant holes near your home, pour boiling water into them. This method will effectively and immediately kill many of the ants inside.
Boiling water and Dish Soap
Much like the baking powder solution, this is another one of those explosive ideas that kill ants almost instantly. This can be used both within the house and to remove stubborn ant hills in the garden that you just do not want out there.
Try combining three parts powdered sugar with one part boric acid. The sugar will lure the ants in and the boric acid will kill them, Pereira says. Liquid is better—adult ants prefer to drink their food—so water this stuff down a little.
Use this white vinegar solution to spray all entry points of your home, try to spry all windows, doors, baseboards and the common paths that ants would travel within your home. Give about an hour for this solution to take effect, then after a few hours the ants should be dead.
Two of the best ways to eliminate ants are Borax and diatomaceous earth. Essential oils, including peppermint and clove, are a natural way to repel and kill ants. Food and moisture attract ants, so keep your home clean and dry to get rid of ants permanently.
A simple and natural way to get rid of an ant nest is by pouring boiling water over it. There are also artificial methods like granules that you can pour into crevices and cracks or onto trails. You could also spray a liquid repellent onto the nest, or areas the ants might be attracted to, like garbage bins.
Controlling Ants on Outside Perimeter with Non-Repellent Insecticides. The best insecticides for ant control as a perimeter treatment are non-repellent insecticides such as Taurus SC, Fuse Insecticide, Termidor SC, Spectre 2 SC.
Simply sprinkle baking sofa directly on an ant nest, then spray with white vinegar. This will cause an a foam-like reaction to help kill the nest. The acetic acid in the vinegar will treat a wide range of garden and common houseplant pests but it requires contact.
From what I have read, ants cannot differentiate between baking soda and powdered sugar because they are similar in size. The sugar attracts the ants, and the baking soda is what kills them: It reacts with the acid in their digestive system, and they explode.
Ants hate Vinegar. The smell of Vinegar will cause them to stay away from it or permanently leave the house. Ants crawl in a straight line, marching towards the food sources. The Vinegar solution will interfere with these pheromones, and the ants will get lost.
Borax, a mineral used in many cleaning products, is lethal to ants, interfering with their digestive system. Create a syrupy paste with borax, confectioner's sugar and water. Put the mixture inside shallow containers with narrow, ant-sized openings and place them near ant mounds or wherever you see ants.
WD-40. Spray any areas where ants are feeding or accessing your house with WD-40. The spray will kill ants and also serve as a deterrent from further access as long as residue from the spray remains.
On the other hand, plain table salt does not. It is only effective in intercepting the ants. This should not be applied on heavy ant-infestation.
Anyway, the ants even got into your salt shaker? That's a lot of ants. The salt killed them because it sucked all the moisture of out of them, I am told, however, that in the long run it is not very effective against hordes of them.
Using Salt to Kill Ants
Ants despise salt, and if they come into contact with it, it will kill them because it dehydrates the ants to the point where they drink so much water that they explode. If you can't discover the colony, leave a salt path along the cracks in your driveway to keep them from leaving.