Ann from Eastpoint, Fl writes
If you are just doing a topical treatment with Tengard SFR, if termites come in contact with the treated area, they will die. However, if you are treating for an active infestation, it is recommended that you dig a trench around the structure and pour the solution into the trench. A treatment with this product will last approximately 5 years.
Answer last updated on: 09/09/2016