One day I was reading a Spin Off magazine article about cleaning wool fleece. Up to this point I had not had the greatest luck washing my fleece in hot water and detergent, mostly because I couldn’t keep my hands off it and I did a good job of felting a lot of it. In this article I read of a fascinating cold water technique called the “fermented suint” method. The article was very basic, with little to go on as far as step by step instructions.
Take an unwashed fleece, soak it for 2 weeks in rainwater, rinse and repeat.
See my Fermented Suint Method page for more on my how to.