Replying to Cleaning Ski Pants

I went to Snowflex a lot over the summer, and my pants dried with flakes of a carpet like material on it. I need to get this off my virtika pants before the season. I was going to wash them, but the tag on my ski pants said use tech wash to keep waterproofing. Is it worth it to go out and buy this stuff? And is it safe to wash my ski pants without tech wash? So far i've just been trying to wipe them off with a wet wash cloth but it takes forever just to clean one pair. Any ideas?