1 cup baking soda
2-4 cups borax
1 cup white vinegar
2-4 cups washing soda
1 teaspoon sweet orange essential oil
1 teaspoon grapefruit essential oil
In large bowl combine all ingredients stirring well adding more or less or borax and washing soda to get desired consistency. Be sure the wet ingredients are mixed in well and that you add enough washing soda and borax so it will not be wet or become a hard to break up mass when it dries. Don't be afraid to add more powder if you think it's too wet. I like mine to be a crumbly powder that breaks up easily. I use about 1/4 cup to each load of laundry, 1/2 cup for more soiled or larger loads. Add the detergent to the water in the washing machine before items to be washed.
Oh be sure to note that this detergent works great in HE washers because of it's low sudsing.....ness! ;)