Our Ei-Giene specially formulated Whirlpool Bath & Spa Bath Cleaning Solution is non toxic & will not damage the pipe joints or the plating finish on whirlpool bath fittings. It will remove deposits & kill bacteria within the whirlpools system pipe work & pump. Each Bottle of Whirlpool Bath Cleansing Solution contains 500ml of cleaner which will give 5 x 100ml cleaning applications at 4 to 5 week recommended intervals.