Introducing STAR BRITE Toilet Bowl Cleaner the ideal solution for effortless and effective cleaning in marine RV and portable camping toilets. This specialized formula is expertly designed to tackle tough stains and residues ensuring a spotless odor-free toilet bowl without the need for hard scrubbing. It s not just a cleaner; it also lubricates valves and seals enhancing the longevity and functionality of toilet components. Safe for use on all types of toilet bowls including plastic and porcelain it s gentle on rubber seals and metallic parts. The cleaner leaves a refreshing scent elevating the cleanliness of your space. Packaged in a handy 16 oz bottle. Removes stains and water deposits from bowls quickly and easily. DIRECTIONS: Squirt cleaner around the top of bowl and allow to run down sides. Use enough product to wet the inside of bowl. Let stand for 5-10 minutes before wiping with brush or cloth. Flush to rinse clean. Safe for use in all recreational vehicle and marine toilets. Will not harm plastic rubber seals or metallic parts.