We all know that we are not supposed to wash our DWR treated and other technical clothing in regular laundry detergent. Companies like GearAid, Granger's and Niwax sell us special soaps in a almost silly variety of formulations to wash and care for our outdoor clothing.
So, I've been wondering a few things that maybe some of our chemist-wise members might have some thoughts on…
1) Is there really a difference between these different formulations for different types of fabrics? There are soaps for base wash, tech wash, wool/merino wash, down wash, etc. From an efficacy standpoint, I have a funny feeling they are all basically the same. Does one really need a different soap for each of these fabrics/materials?
2) There has to be a less expensive way to do this. I know a key issue is caring for your DWR treated clothing and down, etc. And you want a detergent that won't harm treatments, strip desirable oils, etc. I have seen the damage that regular laundry detergent can do to a DWR treatment. So I don't challenge the need for something different. But wouldn't it be nice to find a cheaper product we could buy in bulk that does essentially the same thing. Anyone know of some product not intended for outdoor gear that serves the same function and costs a fraction?
Ideas and thoughts welcome.

