10 Unexpected Uses for Laundry Detergent- how to make washing powder cleaning powder washing powders that contained ,Jul 07, 2015·Instead, make yourself a scum fighter with a mixture of powdered laundry detergent and water. You don't need to add much liquid; just enough to work the powder into a spreadable thick paste.Almost extinct in the US, powdered laundry detergents ...The problem is mostly eliminated by using a machine-cleaning product containing percarbonate and TAED and then washing clothes with a bleach-containing powdered detergent, according to tests ...