Swiffer Sweeper Heavy Duty Wet cloths TRAP + LOCK™ 50% more dirt* so you can quickly clean hard floor surfaces. They are safe to use on all finished floors** and have a scrubbing strip to remove tough spots. Dirt magnet strip funnels dirt & liquids into the pad's center and off your floors. *vs. Swiffer wet mopping cloths **Do not use on unfinished, oiled or waxed wooden boards, non-sealed tiles or carpeted floors because they may be water sensitive. ***Up to 4 hours of freshness left behind after initial product use