Oxygen-based bleach and soap-reduced product. Removes black mold and soap scum from the washing machine tub. Does not use chlorine or synthetic surfactants. This item was purchased from Catalog House. Three boxes (2 bags x 3) provide 6 uses. It's an excellent product that can be used for more than just the washing machine tub. Environmentally friendly. - Brand: SK - Product Name: URUOI Washing Machine Tub Cleaner - Type: Powder - Contents: 500g x 3 boxes - How to use: Used for cleaning the washing machine tub - Precautions: Instructions for use are included Thank you for viewing.