Many species become problematic when properties provide them with areas of moisture. Yards with damp mulch, fallen trees, dense shrubbery, and low-lying areas trap rainwater and provide ants with suitable nesting areas. Moisture that builds up in our homes behind walls and under floors from leaky pipes also attracts ants.
When ants discover a food source to feed their colony, they keep returning to the area. They also sometimes create satellite nests, both indoors or outdoors, near new food sources to expand their colony. Ants make pheromone trails that provide a map to help the worker ants find a way back and forth from the food source to their nest.