Ants can be eliminated using boric acid, chalk, commercial pesticides or by sprinkling plain flour around the area where ants are observed. Removing items that attract ants, such as food and water, encourages the ants to leave.
Boric acid is mildly toxic and should not be used around food, pets or children, but is an effective way to kill ants. Sprinkle a small amount of the boric acid into cracks and crevices where ants enter the home. Sprinkling flour around the places where the ants are coming into the home and in kitchen cabinets is also an effective way to remove ants.
Mother Earth News recommends diatomaceous earth to remove ants from the home. Spread diatomaceous earth around doors, windows and in cracks and crevices where ants are entering the home. The diatomaceous earth causes the ant to dehydrate, but is safe for pets and humans.
Reader's Digest recommends scattering lemon and orange peels around doors, windows and the foundation of the home to get rid of ants. Washing floors with a mixture of 4 whole lemons and 2 gallons of water causes pests to leave the area.
Commercial baits and sprays are also an option. Liquid baits should be placed on kitchen counters, in cupboards and other areas that ants visit frequently. Sprays should be used along baseboards to minimize human exposure to the spray. Remove all standing water and food, such as bowls of pet food, to improve the effectiveness of other treatments.