Crabgrass Shield is a pre-emergent defense against invading crabgrass for use on established grass and turf. It uses natural ingredients to provide a barrier against crabgrass before it appears. Synatek represents that it meets the requirements for an EPA FIFRA 25(b) exemption.
Crabgrass Shield is most effective when applied in the spring. Depending on weather conditions, it can provide up to 8 weeks of protection.
Apply in spring/early summer to established turf grass before crabgrass emerges. When applying Crabgrass Shield allow product to dry before seeding. A second Crabgrass Shield application is recommended at the full rate 5–6 weeks after initial application. For best results, applications should be watered in to reach target weed bank.
Apply 32 ounces of Crabgrass Shield in a minimum of 1-1.5 gallons of water to cover 1000 sq. ft.