Keep your home clean and ant-free with Terro Indoor Outdoor Liquid Baits Ant Killer. Simply place the pre-filled, ready-to-use liquid bait stations near indoor areas where ants are spotted in the house. Ants enter the trap, consume the liquid ant bait, then return to the nest where they pass on the bait to the rest of the colony. Terro ant killer liquid ant baits are specifically designed to kill the worker ant in two to three days, giving the foraging ants enough time to share the bait with the rest of the unsuspecting colony. The bait stations prevent the bait from drying out and provide the ants with a continuous supply of liquid.