Grate the soap and put it in a saucepan. Add 6 cups water and heat it until the soap melts. Add the washing soda and the borax and stir until it dissolves. Remove from heat. Pour4 cups water into the bucket. Now add the soap mixture and stir. Add 1 gallon plus 6 cups of water and stir. Let the soap sit for about 24hrs and it will gel. Use1/2 cup per load.