Bowl Fresh Blue plus Bleach Automatic Toilet Bowl Cleaner Tablets come in a pack of 2 and use oxygen bleach to fight stains effectively. They provide continuous blue water cleaning, helping to keep your toilet bowl free from stains between scrubbings. These tablets prevent buildup caused by hard water, minerals, and lime scale. Safe for septic systems and plumbing, they offer a reliable and convenient cleaning solution. Proudly made in the USA, they ensure a fresh and spotless toilet with minimal effort.