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Roger writes

How many ounces of Specticle 20 WSP Pre-Emergent Herbicide are required for 4 gallons of water?


You want to mix 0.086 oz of Specticle WSP in to one gallon of water to treat 1000 sq feet (0.344 oz per 4 gallons of water). Please follow the product label application instructions.

Answer last updated on: 01/13/2014

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