TERRO® Ant Dust
- Product Review (submitted on July 21, 2017):
This product works - period. After repeated seasonal "invasions" by small ants I began using it as full perimeter protection around the exterior of my house, from beginning to end of the ant season. As long as I am careful to maintain fresh powder, there are no ants inside the house. As soon as ants hit this barrier they are sorry they tried. Also stops some other crawling insects as well. I only gave it four stars instead of five because, although the product is touted as "waterproof," rain will diminish its effectiveness and eventually wash it away, requiring re-application several times a season. This gets expensive. Nevertheless, fresh powder goes down and the ants stay out.