A professional pre-emergent herbicide delivering up to 6 months control of key grassy weeds including Poa annua, Summer Grass, Crab Grass and Crowsfoot. Barricade binds high in the soil profile to stop germination without affecting established turf roots, keeping lawns in prime condition. Flexible application timing allows treatment well before weeds emerge. Suitable for couch, kikuyu, buffalo, zoysia and other warm-season grasses. Low odour, non-staining formulation. Requires mixing and wash-in within 7 days. 250ml treats up to 625m².