An important part of the AutoClean system, cleaner and deodorizer refills work to attack and eliminate odors at the source. Easy In-Line Installation is quick and simple, with no need to shut off water. In-Line Installation also makes it easy to reach hard-to-clean areas, like rim holes, to ensure the entire structure is clean. Metered refills deliver a consistent dosage of scented cleanser. Flexible programming options allow up to 90 days between refills.