White vinegar, available at all grocery stores, is a cheap and effective way to kill and repel ants. It is also a natural cleaning agent. Try using a 1-to-1 vinegar/water mixture to clean hard surfaces, including floors and countertops, wherever ants are likely to travel.
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.
To use vinegar as a homemade ant spray, simply fill a spray bottle with a 50/50 solution of vinegar and water. Spray the solution directly on the ants and then wipe the area clean with a damp paper towel.
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.
Ants hate the smell of strong citrus fruits. Save your orange, lemon and grapefruit peels and scatter them around entry points. It's a natural way to deter ants without harming them.
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.
Better Than Hopscotch: Ants will not cross a chalk line. Draw a chalk line in front of exterior doors, to prevent ants from coming into the house. You can also draw a chalk line around tables on the porch or patio, to keep pesky ants away while dining outdoors.
It makes sense that you want to wipe them out the moment you spot them in your house. However, this might be the beginning of your troubles. Killing ants will, definitely, attract more ants because the dead ants release pheromones that attract or rather alert, nearby ants.
The reason vinegar is so good at repelling ants is the strong, acidic smell of vinegar. It overwhelms their sense of smell, which confuses the ant and causes it to leave the area. Ants depend on their sense of smell to survive. They use it to find food, and if they can't find food, they can't survive.
Peppermint
Peppermint is a natural insect repellent that may effectively deter ants and other bugs, such as mosquitoes. To use peppermint essential oil as an ant deterrent, complete the following steps: Mix 10 to 20 drops peppermint essential oil with 2 cups water in a clean plastic spray bottle.
Both cayenne and black pepper repel ants. Ants hate cayenne pepper. Black pepper will work just as well too. Locate the source of the ant infestation problem, sprinkle some pepper around that area and if possible, create a wall that will stop the ants from accessing your household.
Natural deterrents.
Salt, baby powder, lemon juice, chalk, vinegar, bay leaves, cinnamon, or peppermint oil are a few items that you have around your home that will stop ants from coming inside. Lay these out in areas where you see ants, and they'll stop using that area as an entrance into your house.