PAUL UDOVIC wrote a review of Nikwax Tech Wash on August 11, 2014
Familiarity: I've put it through the wringer
Cleans your waterproof gear properly. But some stubborn stains may still require a little spray and wash directly on the area. I usually prefer the 2 in 1 solutions (ie grangers) that cleans and replenishes the DWR coating in 1 wash.
Overall good product to take care your spendy gear