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.
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.
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.
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 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.
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.
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.
Aside from garnishing your tea, lemons can also be extremely helpful when it comes to combating ants in your home. The smell of the lemons masks the scent trails that they use to get to and from food, and also generally deters them from taking up residence.
Repel ants
Leave coffee grounds where the ants are and they will carry it home and eat it. This method takes a few weeks to see, but after a while you'll notice a decrease of the ants population.
Home Ant Control Tips
Windex, the glass cleaner, is a known insect killer. When you have an ant swarm in your house, spray them all with Windex and they will die nearly instantly. Windex can also eliminate some of the scent trails that ants follow to find food.
Sweet Smelling Things Attract Ants
It is no secret that one of the things that attracts ants more than anything else is sugar.
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.
As a general rule, ants are strongly attracted to smells from candy, sweet-scented foods, carbohydrates, sugary drinks, fruit-scented candles, meat, perfume, nuts, seeds, grease, oil fats, and dirty laundry.
Epsom salt can be a very effective pesticide, and it can be used against ants specifically. However, it does pose a risk to your garden if you use too much. Consider saving the Epsom salts for a relaxing bath and pick another organic pesticide if you have a small infestation.
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.
Cayenne pepper / Black pepper
How it works: The spicy, strong scent of cayenne pepper (or black pepper, if that's what you have) irritates ants, and they try to avoid it. Pepper's scent also masks the ants' pheromone trails that lead them to food sources in your yard and home.
Baking soda; vinegar; lemon juice; some detergents (and cleaning products); Tabasco sauce (and other spicy substances, such as red chili pepper, black pepper and cayenne pepper) usually repel ants to varying degrees, and you may have seen them trapped in these circles.
Ants can be attracted to even a trace of leftovers like coffee residue. Steve Counsell works for Batzner Pest control and says ants are a common pest in kitchens.