Description Outdoor ant problems are an annoyance, but they can also lead to indoor ant problems as ants travel in search of food. TERRO Perimeter Ant Bait Plus is designed to kill ants and other insects outdoors, keeping an indoor invasion at bay. Ants are drawn to the sweet ingredients in TERRO Perimeter Ant Bait. The bait, which is borate-based and formulated with a concern for the environment, has a delayed effect on ants. A slow kill is needed to allow time for the foraging ants to make several trips to the bait and deliver enough bait to the rest of the colony. While the active ingredient in the bait will ultimately kill the worker ant, it works slowly enough that the worker has time to get back and share the bait with the rest of the colony. Long-lasting, the weather-resistant granules wonât break down when exposed to the elements. It will stand up to sunlight, heat and rain, and remain effective until consumed by the ants and other unwanted insects. 100% organic ant bait - all-natural ingredientsWeather resistantNiaban attractantNatural ortho-borac acidSafe to use around people and petsKills ants (except fire ants), cockroaches, crickets, earwigs, silverfish, slugs and snailsNot harmful to beneficial insects (ladybugs and butterflies)Convenient, easy-to-use 2lb. shaker canisterLong-lasting, weather-resistant granulesSlow kill gives worker ants time to transport bait to the colonyAlso kills carpenter ants, cockroaches, crickets, snails and slugs