Boil 2 cups of water in a pot for 10 minutes. Combine the ingredients in a seperate bowl. Add 3 tablespoons of the herbs into the water and then remove from heat. Allow it to sit for about 30-45 minutes. Strain the mixture into a clean bowl. Next add about 2 ounces of the mixture into a a clean 8 ounce plastic bottle (you can use an old shampoo bottle) Add in the castile soap. Close the bottle and shake well.