The weed will only be killed when it begins to sprout from the seed and hits the herbicide barrier. It is possible for seeds to remain dormant and not be harmed by the pre-emergent herbicide application. This is why weed control is a constant process. There will always be seeds under the surface and a portion will germinate each season. Annual applications must be made to significantly reduce large infestations. If you are looking for Weed Killer distributor, then you can check Statewide Service Center online.
Pg88
Rogers Sheridan
Barefoot Potts
Mcdaniel Huynh
North Deleuran
Bowden Matthews
Holcomb Noel
Poe Solomon
Cervantes Hart
Ashley Goodman