spunbonded polypropylene + trifluralin (Biobarrier)
Remarks A geo-textile fabric containing permanently attached nodules of time-release herbicide. Prevents root encroachment when placed vertically, horizontally, or surrounding structures such as sidewalks, roads, building foundations, curbs, tennis courts, swimming pools, septic fields, or underground pipes or cables in the soil. Extend edge of fabric 18 inches beyond structure to prevent root growth around edges of protected structure. Maintain at least 4 inches of soil overlay. Physical and mitotic inhibition of roots.
Site of action (trifluralin) Group 3: microtubule assembly inhibitor
Chemical family (trifluralin) dinitroaniline