Ants will travel in a wide range searching for food sources. In most scenarios establishing trails around the food source guiding other ants. As a result, ants become a nuisance for homes and businesses. The primary causes of an ant infestation are cleanliness. Leaving uncleaned dishes, food residue, crumbs and trash will provide food sources for ants. What starts as a few ants in the area can become a major pest-issue if ants establish colonies around the foundation of your home or business.