How often should I use Calgon in my washing machine?
Photo Credit: Courtesy of 3DStockPhoto (washing machine image)
You should use Calgon in every wash and at all temperatures to get the best limescale prevention. Just put the recommended dose of Calgon in the main wash compartment of the dispensing drawer on top of the laundry detergent. Calgon goes to work immediately as soon as the water starts to flow.