Answer
Apr 07, 2026 - 01:50 PM
SealGreen Gray-Out is designed to remove organic stains, including petroleum-based oils, as well as stains from fruits, leaves, and animal-related staining.
We are currently testing Gray-Out for effectiveness on fence/deck stains on concrete. Until testing is complete, we cannot guarantee results or make a formal claim that it will remove those stains.Source: SealGreen Website
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