Easy to use! Simply pour one powder packet into the toilet tank, no scrubbing needImproves flushing and helps clean water jets for better flowTank cleaner stain remover scrub cross fast powder kitchen bathroomSuper powerful! After six hours, flush your toilet, It helps eliminate hard water mineral deposits, rings, stains, and odors from your toilet tank. Improves flushing and helps clean water jets for better flowVery safe! It won’t harm the toilet, plumbing, or the septic system. Chlorine and phosphate free