can termidor be used for ants
- A fipronil-based insecticide -. Summary: Termidor (tm) is a new-generation, 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. Jack DeAngelis, PhD OSU Ext. Entomologist (ret.)