ABSORB + LOCK STRIP helps trap dirt & grime deep in pad so it doesn't get pushed around. For best end results on your hardwood floor, use with Swiffer WetJet solutions. There's a perfect solution for any cleaning need Recommended WetJet mopping pad for use on finished wood floors* *do not use on unfinished, oiled or waxed wooden boards, non-sealed tiles or carpeted floors because they may be water sensitive. Safe on all finished floors* *do not use on unfinished, oiled or waxed wooden boards, non-sealed tiles or carpeted floors because they may be water sensitive. Also try Swiffer WetJet Heavy Duty! Contains an extra SCRUBBING STRIP with the power of Magic Eraser