Amdro ant control is long lasting and controls the problem at the source, the colony. Can be used indoors or outdoors and kills grease, sweet-eating, and fire ants. Destroys the entire colony with a slow acting poison, which allows time for the worker ants to get the food back to the colony. Helps control Argentine, Black Carpenter, Cornfield, Little Black, Odorous House and Pavement Ants. Replace indoor stations after 3 months, and outdoor stations after 6 weeks.