The Vileda Colors 8-Piece Microfiber Towel can be used wet or wet. It easily cleans the most stubborn and greasy stains even without the use of detergents and is suitable for all surfaces without leaving traces. With 100% microfibers that remove over 99% of bacteria with just water (research by an independent, accredited institute of microbiology and immunology).*Removes Ecoli & S. aureus bacteria from hard surfaces (floors, tiles).