I took the plunge, as it were and created a suint bin. The process is so simple, just fill a bin with water, rainwater preferrably and soak your first fleece for around 5 days. The lanolin in the fleece kind of ferments and starts up a saponification process, whih is basically soap in simple terms. There is a great blog post here by Moz who goes into great detail and has a good FAQ section.
main points I have to add are, wear rubber gloves after the process has
started as the smell is hard to get out of your hands (the dogs loved
it!) and set the bins as far away from the house as you can. Mine are at
the top of the field behind my greenhouse, but not everyone has a
field! Maybe you have neighbours you dislike? Oh, that was wicked of me
an you see how
lovely and white it is now? There are still some yellow parts and I'll
wash those in warm water and then dye them.
do I look like? I think I've gone native with my footwear! Leggings,
socks and clogs, haha. I wear these clogs all the time, but in the wet
weather they're lethal as there's no grip at all. I've slipped up that