Termidor SC Insecticide

Summary: Termidor SC is a new, relatively low toxicity insecticide that is useful in a wide variety of pest control situations. Termidor contains the active ingredient fipronil and can be used for termites, carpenter ants, and nuisance ants (outdoors).

Termidor SC (right) is a relatively new insecticide. The active ingredient in Termidor is fipronil; see the fipronil factsheet and Termidor label below. There are a number of active labels for fipronil-based insecticides currently sold in the US. Uses include flea medications, like Frontline and Frontline Plus, a commercial agricultural insecticide called Regent, and Termidor the structural pest control insecticide. Termidor SC (SC stands for soluble concentrate) is labeled for use against termites, in pre- and post-construction applications, carpenter ants as an exterior perimeter treatment and for nuisance ants (exterior only).

Termidor, or fipronil, is a slow-acting insecticide. This "delayed-action" effect allows insects like termites and ants, which live in colonies, time to carry some of the insecticide back to the nest where it contaminates the whole colony. This is why Termidor works well for carpenter ants as a foundation or perimeter spray because workers pick up the insecticide as they travel back and forth from the nest.