I have found a very easy recipe for a soap nut soak which can be used as a laundry liquid.

• In a heavy saucepan with a lid add 4 cups of water and 7-8 soap nuts.
• Bring to the boil and then gently simmer, covered for about 15 minutes.
• Remove the pot from the heat and let it sit, covered at leaset until cool. (leaving the liquid over night will result in a stronger solution).
• Strain the liquid with a cheese cloth (or you can use your wash bag) to remove any pieces of shell.
• Add your favorite essential oil if you would like a sent to your soap nuts.

This batch will last for about 8 loads of laundry. (use 1/4 to 1/2 a cup for each load). Your soap nut liquid will keep for about 4 weeks. If it is kept covered, and away from direct sunlight.

I have found a really nice website called the laundry tree were i found the recipe and there are different things you can use this recipe for with alterations to the recipe to suit the type of cleaning you want to do