There are 3 species of fire ants that are common to the Southern US. The red imported fire ant, the imported fire ant, and southern fire ants. Fire ants are a significant health threat due to their stings. Regular outdoor applications to lawns and foundations are often necessary because re-infestation from neighboring properties is common. The key to fire ant control is to locate all mounds and treat them. Mounds can be treated by drenching with liquid insecticides such as Demon WP or Talstar or by baiting such as with CeaseFire Professional Ant Bait . Ceasefire Professional Ant Bait contains Fipronyl which is the active ingredient in the popular Termidor Insecticide. Fipronyl is carried by back to the ant mounds by the workers and then fed to the ant population. Fipronyl is then spread throughout the colony by means of food sharing by the ants and then slowly wipes out the entire population including the queens. Fipronyl is non-repellent to the ants which means that they cannot sense that there is a pesticide or toxicant present which greatly encourages feeding and the consumption of the bait.
An application of a fire ant bait containing a growth regulator such as Award Fire Ant Bait to the entire lawn helps limit re-infestation of treated areas. This works especially well on large lawns, acreages, golf courses, pastures, etc.
A perimeter application of a liquid insecticide such as Demon WP or Talstar helps to prevent their entry into homes. In slab foundations, fire ants can nest indoors in wall voids by entering the structure from below and following plumbing lines in. Bath traps, shower stalls, and hot water heater walls are particularly well suited areas for fire ants.