I stopped using powdered detergent years ago because it would cake on the clothing. This detergent dissolves totally, even in cold water. It is both economical and easy to make. I tested it on my husband's shirt collars. It works great!
1 cup borax
1 cup washing soda
1/2 -1 cup baking soda (I decided to add this for odors. It is not necessary)
1 bar of ZOTE or Fels Naphtha ( I prefer the white ZOTE but used the pink so it would show up in the photos of the finished product.)
bowl and spoon for mixing
blender or food processor