Thanks Brontide

So I am now using soap nuts. I am getting them through Mama Aum but I have been using some that a friend got me. They are basically a dried fruit (I think) and you put about 6-8 half shells into a bag or sock and put them in with your wash. They are low suds, totally natural and they contain no palm oil (for those concerned about deforestation). I have tried them out on my cloth nappies and are really happy with them. They don't really have their own smell so when the clothes dry out they have no residue smell. You can use a few drops of essential oil (like lavender) though if you want to. Also they are really cheap! A box costs about $30 and that lasts 6-12 months (according to different people I have spoken to). Each 'dose' of 6-8 half shells lasts for about 5 washes if you use cold water or about 4 if you use hot as it degrades the nut quicker.