Swiffer Heavy Duty wet Multi-Surface Mopping pads trap + lock 50% more dirt allowing you to quickly and easily clean all your hard floor surfaces. Vs. Swiffer Wet Mopping Pad. The dirt magnet strip funnels dirt & liquids into the pad's center and off your floors. The scrubbing strip breaks apart even the most stubborn dirt. Safe on all finished floors not use on unfinished, oiled or waxed wooden boards, non-sealed tiles or carpeted floors because they may be water sensitive. Make sure to also try Swiffer Heavy Duty dry cloths to take your sweeping game to the next level.