Ants are some of the most difficult pests to remove from the home. According to National Geographic, the insects live on most of the world and account for 15% of the total terrestrial animal population. They can be especially problematic because, regardless of whether they nest indoors or outdoors, they can still find their way inside.
Ant infestations inside the home can begin when a winged potential queen ant makes its way inside the home. These ants look similar to flying termites but are bent in the middle instead of the cylindrical shape characteristic to termites. Some winged ants are merely drones, but they almost exclusively leave their original nests to establish new ones. If a potential queen gets inside a home, it will begin laying eggs and create a new colony as soon as possible. While many ant colonies ultimately fail, the ants may be able to eventually develop an indoor nest and from there they will travel into the pantry and kitchen in search of food.
House ants will nest in any dark, undisturbed spot they can find. The College of Agriculture at the University of Kentucky reports that ants will build nests in the walls, behind cabinets, and under seldom-used appliances. The fact that the ants will often nest in places that are already neglected can make them even more difficult to find. If the nest is hidden well enough, professional pest control is the best way to find and exterminate the insects.
Spotting an indoor ant does not always mean that there is a colony indoors, but may be an indication that they are coming in from outside. Ants leave trails of scent for each other to follow from the colony to the source of food or water. Known for their strength, ants will carry the food and water back the colony. Crumbs or water left on the floor are ideal sources for ants, so one of the best ways to prevent ants from entering the home is to discourage outdoor ants from getting inside. If they are coming frequently enough it may be possible to simply follow the line of ants heading in and out of the house to their colony.
Although outdoor-nesting ants are often less of a household problem, it can make their colonies much harder to find. There are many places ants can nest outdoors, including under gravel, beneath bushes, under old construction equipment, in the foundation of houses and many other places. Ants are able to nest virtually anywhere they can dig so the possibilities are nearly limitless.
There are many do-it-yourself methods to dispel ants, but none are known to be as effective as professional exterminators. Pest control is usually best left to the professionals, especially since many of the products marketing for ant prevention will not fully solve the problem. To remove ants completely, the entire colony needs to be eliminated or the ants will rebuild.