As one of the only floor treatments that is EPA registered to kill food pathogens such as Listeria, Escherichia coli (E. coli), and Salmonella on the floor, Sterilex Ultra Step has been customized to address sanitation challenges for which routine dry cleaners and sanitizers (such as peroxide and dried bleach), are ineffective. Sterilex Ultra Step is based on Sterilex's proprietary PerQuat chemistry, the only chemistry with products approved to remove biofilm on both public health and industrial surfaces.* Sterilex Ultra Step consists of small blue granules, which not only help to prevent slippage but are also able to fill in small, hard-to-reach areas. Plus, it lasts longer than many competitive products and, in general, can be used at a much lower rate than traditional floor treatments.