I may have perhaps washed it once (not sure if even that many times). I usually let the rain do the washing. The Neoshell is supposedly less susceptible to the pores getting plugged with dirt and oils, so I never felt the need. I also never applied any treatment to it since it had an awesome DWR until relatively recently.
I got it from REI pre-warranty change, so I may just return it. Looking back over my receipts, I got it in February of 2013, so less than 2 years old.

