Heavy-Duty Dry Refill Cloths, 10.3 x 7.8, White, 20/Pack, 4 Packs/CartonFeature over 30,000 3D fibers that brush into tight spaces to collect dust, dirt and pet hair. They have a stronger electrostatic charge to provide excellent particle collection. These disposable cloths are thicker and have deeper lift and lock pockets than multi surface Swiffer dry cloths. Trap more dirt, dust and hair vs. multi surface Swiffer dry cloth. Over 30,000 3D fibers brush into tight spaces. Great on grout and any other floors from tile to