Pro-Kleen Toilet Macerator Cleaner & Descaler is a highly concentrated, long-lasting formula designed to deep clean toilet macerators and effectively remove limescale. It is compatible with all Saniflo pump units, toilets, and urinals, and can also be used as a general toilet cleaner. This product is completely harmless to septic tank operation and helps prolong the life of the unit. It can be used both externally and internally.