Dean from Texas writes
We recommend trenching with Termidor SC because it binds to the soil and creates a continuous barrier. Most members of termite colonies remain hidden and there are often multiple colonies, so if you only treat one area where you visibly see them, there is no way to ensure that all the termites will encounter the amount of Fipronil needed to eliminate a colony. While Termidor does have a transfer effect, the idea is to create a barrier and as the termites travel through the treatment, they will absorb enough of the active chemical used in the treatment and then die.
Answer last updated on: 01/27/2017