Do you know of any DWR products that work well and last?  I used Nikwax Tech Wash and TX. Direct to retreat my Marmot Precip rain gear and followed the directions exactly.  Even after the initial treatment, I found areas that were wetting out even though I thoroughly covered both the jacket and pants.  I re-wet both and retreated.  The DWR finish was OK for a short time, but the set started wetting out again in just a couple of short trips.  There's got to be something that works better.  If not, I might as well purchase new raingear each time the finish fails.