thanks everyone, for the commiseration and for the tips. Ironkurtain, I'm nuking a bunch of sweaters in the dryer right now. I found out that the cashmere sweater I was wearing today had some holes in it....grr. But they're small and only three, so I'm guessing the sweater can be darned pretty easily.
But I still don't really have a good solution for the woven wool stuff, like the dress and the suit jacket. I put the matching pencil suit (which didn't seem to have any holes in it) in the freezer and will leave it there for a week. It's just disheartening given that it was a new suit that I expected to last me a while...
Also, to replace some sweaters that I had to throw out, and to replenish my warm clothing, I ordered two cashmere sweaters, one from Inhabit (on IK's recommendation on this forum), the other from JCrew (the cashmere hoodie). The Inhabit one was final sale, so I'm going to keep it--I put it in its own plastic box with a sachet with soap and cloves, but I may just directly return the JCrew hoodie without opening it...it was quite expensive and if it's just going to get holes in it within days of arriving here, there may not be a point It's sad because it looked so beautiful online and I bought it after days of thinking about it.