Apr 04, 2014 - 03:25 PM
In University controlled settings, with termite colonies existing inside an aquarium, control has been obtained in 6 months. But that's in an aquarium, with no other wood or food sources available, only the bait.
The bottom line is this -
1) The termites have to find the bait stations and then consume enough bait to kill the workers. This in turn causes the soldiers and the rest of the colony to starve and crash. Evidence, is with the Sentricon® system sold by Dow Agrosciences. They contend that when you find dead soldier termites in the termite bait stations, that there are not enough workers to feed them. This is "evidence" of colony collapse.
2) Depending on where you live and how populated the termites are, more or less bait may be needed. It takes time for the termites to consume enough bait to control ANY termite colony.
So the bottom line is that no one really knows. Best guess is 2-5 years. That comes from Dr. Roger Gold, the head Entomologist at Texas A&M University.