The Xterior Gutter Zap Quart Super Concentrate is the equivalent of 1 full gallon of Concentrated Gutter Zap, which yields 3-5 gallons of ready to use product. Gutter Zap is designed to clean the black streaks off Gutters caused by electrostatic bonding. This product is to be sprayed on the effected areas, then wait a few minutes and spray off.
Residential Use MSDS:
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