Monterey Ant Control is attractive and deadly to ants. Ants quickly find pickup this bait, take it back to the mound, and feed it to the entire colony including the queens. Ants start dying in 24-36 hours with mound colony destruction in 3 to 14 days. Fire ant colonies are started by newly mated queens that fly into an area, burrow into the ground and begin laying eggs. Several flights are common during the summer, often shorthly after rains. It takes several weeks for new mounds to appear. Combining mound and broadcast applications eliminates/controls visible mounds and helps prevent new mounds from forming. Active Ingredients are Iron Phosphate and Spinosad.