The best way to use ECOS OxoBrite depends on the type of front-loading machine you have. We recommend following the owner’s manual on where to add bleach. Some machines have a harder time dissolving OxoBrite than others; if that’s the case with your machine, you can dissolve a scoop (or more) of OxoBrite in a cup of warm water and put it in the bleach dispenser. We don’t recommend keeping any remaining mixture for later use but instead dissolving just as much OxoBrite as needed for each load.