As the temperature rises and conditions become dry during the summer, fire ants enter homes in search of food and water. It doesn't make for very pleasant dreams. Commonly they will enter through poorly sealed windows, through gaps under walls and through small holes for wiring and plumbing. In some rare cases, fire ants nests can be found in very unusual situations, such as roofs or in wall voids. They do not necessarily require soil for a suitable nesting site, but they do require a certain amount of moisture.
Many people move plants in and out of the house.
When bringing plants in, be very careful not to bring in pots that contain fire ants. Fire ant colonies will build their nest up into cavities in molded plastic toys and other hollow objects. Store pet food in tightly sealed containers. Use contact insecticides labeled for indoor use inside the home. Do not use outdoor baits such as Amdro, Logic, Extinguish, etc. inside as these will only attract more foraging ants.