Stop weeds before they start with Preen Garden Weed Preventer. Sprinkle around flowers, vegetables, trees and shrubs to prevent weeds from germinating. Preen will not kill existing weeds; but will prevent new weeds from sprouting, eliminating the need for difficult and time-consuming hand-weeding. Use Preen during the growing season to prevent weeds from coming back for up to 3 months.
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