What is the active ingredient in FirstLine GT Plus Termite Bait Stations that actually kills the termites and how does it work?
The active ingredient is sulfluramid, a slow acting stomach toxicant that kills all castes of subterranean termites including reproductives. The active ingredient in other baits such as Sentricon and Exterra are insect growth regulators and they car not effective against all ccastes of termites, namely reproductives.