Clean uniform toilet bowl clips are the perfect solution for both common tank toilets and the tankless toilets often found in commercial settings. Provides effective odor control for any toilet. Easy installation requires no tools; simply clip into place. Fits nearly every toilet tank or tankless, round or oblong shaped. Works effectively for 30 days. VOC compliant in all 50 states. Gentle on pipes no harsh cleaners. No ozone depleting ingredients.