Fragranced toilet block these fragranced toilet block clean and freshen the toilet bowl leaving a delicate fragrance after every flush as well as preventing limescale build up each block comies in a water soluble wrapper to help prevent mess and are safe to use with septic tanks and all other toilet cleaners including beach this pack has 6 blocks fresh blocks water soluble wrapper safe to use with septic tanks and bleach ocean fresh scent long lasting high quality ocean