Toilet Duck makes your Toilet Bright, White and Dirt-Free; Duck Fresh Discs Lavender & Eucalyptus will freshen your toilet with every flush, unique gel technology climbs the bowl for 360-degree coverage and provide a continuous fragrance release that helps keep your toilet bowl fresh for up to 630 flushes; Duck Fresh Discs are toilet gel stamps that fight stains which harbor germs, while preventing limescale buildup; Simply stamp Duck Fresh Discs to the toilet bowl and refill as needed