One Step Cleanser / Sanitizer -Assorted Sizes. Use 1 tablespoon per gallon. This oxygen based cleanser sanitizes on contact. Environmentally friendly and non-toxic. No rinsing required. What makes One Step different from other powdered cleansers? One Step is an environmentally sound no-rinse cleanser. Other powdered cleansers either require rinsing due to their alkaline nature or use materials that can be harmful to the ecosystem. One Step uses active oxygen to do its work. One Step is a unique substance which consists of oxygen entrained with a mineral crystal. When added to water, this crystal dissolves and releases the oxygen in such a way to form hydrogen peroxide. The hydrogen peroxide does its work and degrades into oxygen and water, leaving only the minerals behind. Those minerals are naturally occuring compounds in the environment and are quite stable.