For the past 10 years, Power Keen Corporation's Right Off has been the best selling concrete removal product in the Ready Mix Concrete industry. Right Off's "original" formula was designed to meet the heavy-duty cleaning requirements of the Ready Mix industry without the heavy-duty corrosive effects of harsher cleaning acids. As a phosphoric acid-based cleaner, Right Off does not contain any muriatic acid, hydrochloric acid, salts, or chlorides, and it is 100% Biodegradable, Non-Corrosive, Non-Regulated, and a Non-Skin Irritant.