CleanMaster’s KnockOut 1 is a next-generation all-in-one oxidizing stain remover designed to remove organic and natural dyes, discolorations and other types of stains.

Almost 100 years ago, Dr. Søren Sørensen, a Danish biochemist, invented a measuring system that would become essential to proper carpet and upholstery cleaning - a system that measures whether something is acidic or alkaline, known today as the “pH scale.”