Pre-filled and Ready To UseThese pre-filled, ready-to-use liquid ant baits are an effective part in ant control around your home or office. Sweet –eating ants will enter, feed and return to the nest where they will pass on Terro to the rest of the colony. No drips, spills or messPlace a liquid ant trap at any point where ants may enter your home. Each trap lasts up to 3 months.