All Gumnut products are sealed to reduce marking due to stains and water absorption. Resealing in a clear seal is recommended every eighteen months to refresh the appearance.
WARNING: Hydrochloric acid is NOT recommended for use with concrete pavers as irreparable surface damage may occur.
Protect your pavers against possible staining from mortar, oxides, cement and rust.
Attempt to clean stain before it hardens or dries up in all cases.