Until recently I always used liquid detergent, which I have given with the aid of a dosing ball directly to the laundry. But since I now have a new washing machine, the Always weigh the laundry before washing (thereby the drum rotates), I could not do much with the dosing ball, as the whole detergent distributed before the laundry on the clothes etc. has been. Now I have the Persil Duo-Caps discovered for myself and my laundry. This I need to just give laundering. During the washing process they dissolve then completely. My underwear comes out clean and smelling this fresh. Simple can wash clothes not be.