All wood based products, even those specially designed to have increased moisture resistant characteristics are hygroscopic (they will react to moisture) and as a result will expand or contract accordingly. All sources of sub floor moisture must be remedied prior to installation. Use a dry or dry/ damp cloth to blot up spills as soon as they happen. Do not allow liquids to stand on your floor. Do not pour liquid directly on the floor, or use an excessively wet mop that will puddle or allow water to continue standing on the floor. For tough spots such as oil, paint, markers, lipstick, ink, or tar, use acetone/nail polish remover on a clean white cloth, then wipe the area with a damp cloth to remove any remaining residue. For best results use FuzClean Laminate Cleaner and a mop for routine cleaning. Sweep, dust, or vacuum the floor regularly with the brush attachment to prevent accumulation of dirt and grit than can scratch or dull the finish.