Contains a single cistern block and Sani-Klo dispenser.
How to use the product
Place a cistern block inside the dispenser. Let the dispenser stand on the base of the toilet cistern. Adjust white pull tab accordingly, pull the tab up to let a lower concentration (lighter blue water) into the toilet, and push the tab down to let a higher concentration (darker blue water) into the toilet. Suitable for use in all toilets that has a cistern.