TERRO Liquid Ant Bait Stakes you can stop your ant problem at the source. The bait stakes target ants outdoors before they can come inside. To kill common household ants place stakes in areas where you've seen ant activity. This will attract foraging ants so they can take the bait back to the nest As the bait circulates through the colony it kills the ants you see and the ones you don’t. Within a few days you should see a significant decrease in the number of ants visiting the bait