Kaboom BowlBlaster Toilet Bowl Cleaner, Sparkling Clean Scent

100% tough. Goes in purple. Turns green when clean (When it turns green, just brush and flush). Changes color when clean (When it turns green, just brush and flush). Kaboom BowlBlaster takes the guesswork out of cleaning your toilet! The powerful, clinging formula goes in purple and starts to work on contact. When it turns green, just brush and flush. Questions? 1-800-781-7529 (Mon.-Fri., 9AM-5PM ET). For more information, including ingredients, visit our website at: www.KaboomKaboom.com.