Ants are attracted to sweet and greasy substances. They will invade buildings through the tiniest of cracks in search of these substances that are often found in your kitchen, pantry, and garbage cans. Pools of water created from leaky faucets (under the sink or garden hose) can also attract ants.
Ants will nest in and around your home, especially during the winter months, for warmth and survival. Wall voids, attics, countertops, baseboards, and under the foundation are all places where ants can build their nests.