Delta Hand Free Squzee Scratch Mop Bucket System Delivers A Better Clean By Effectively Removing Dirt, Grime And Over Bacteria With Just Water. Delta Flat Mop Is A Better Way To Truly Clean Your Floors Removes Over 99% Of Bacteria With Just Water Refill Made Of 100% Microfiber For Streak-Free Cleaning Has Soft, Absorbent Strings That Will Not Scratch Floor Surfaces. It Is Suitable For Use In Mopping All Surfaced Floors.