Bait stations. A combination of sugar and proteins is placed in the trap to attract ants, along with borax, a slow-acting ant killer. Slow is important. It means that ants can take the mixture back to the colony and share it with other worker ants and the queen. Because borax is slow-acting, the original ant and other ants can return to the trap for the sugar and protein mixture and the borax and keep on sharing. Over a period of 3 to 7 days, the entire colony will be wiped out.
