No, you should generally avoid leaving CLR (Calcium, Lime, and Rust remover) in your toilet bowl overnight. CLR is a powerful, industrial-strength acidic cleaning formula containing lactic acid and gluconic acid. Leaving it sitting stagnant inside a porcelain toilet bowl for 8 to 12 hours can cause the harsh chemicals to strip away the protective shiny porcelain glaze, etch the ceramic surface, and potentially damage the rubber flapper valve or plastic flush components at the bottom of the tank. For safe results, follow product label directions by applying CLR, scrubbing after a few minutes, and flushing thoroughly. Verification: Check the manufacturer instruction label on the bottle for recommended contact time limits.
1 votes
Marked as accepted