Cecilia from Warclamb@optonline.net writes
Our home has a 2' wide concrete apron around most of the perimeter at ground level. The ground apron meets the block foundation. The block foundation extends 18” up from the concrete apron where it meets the siding. So there's really no soil to treat directly in contact with the foundation. We were going to spray Dominion 2L much like one would use Termidor for ant (not termite) control-- 1' up the foundation and 1' out from it and around the door and window frames-- but it looks like imidacloprid only binds to soil/foliage. Would Dominion leave a residue on the concrete foundation/apron or the door frames so that if the ants walked over it, it would eventually transfer back to the ant colony? If so, would this treatment need to be repeated every 30 days or so?
You are exactly correct in how to apply the product around the foundation of the home and it does leave a residual behind. The longevity of the residual for termite control bonds to the soil for 7 years, but when used as a perimeter spray it will last at least 30 days on concrete/grass to control the ants. They will pick up the product without realizing it and transfer it back through the entire colony.
Answer last updated on: 05/14/2013
