May be used in washing machines in combination with laundry detergent or used as a pre-soak. Similar to CL-2 dry chlorine bleach but formulated at a 4.5% available chlorine level. For an average 12-gallon home washing machine, put the detergent and laundry in the tub. Fill with water. Then add three rounded tablespoonful's of 4.5% BLEACH just as agitation starts, and finish wash in normal way. For badly stained fabrics, increase the amounts in the directions above. For bleaching fabrics by hand, prepare a solution by adding a heaping teaspoonful of 4.5% BLEACH to two gallons of water. For commercial laundries use 12 ounces per 100 pounds wash load.