A cleaning system for a sanitary fixture (e.g., toilet) can include a cleanser assembly, housing a compartment formed in the deck of the fixture in fluid communication with a waterway leading to the bowl. The cleanser assembly can receive a cartridge containing a cleaning product for insertion into the compartment and introduction into the waterway. The assembly can support the seat and cover of the fixture, and can have a low profile and curved shape that complements the corresponding shape of the seat and cover, and provides a balanced look that makes the assembly appear to be an integral part of the sanitary fixture.