Yesterday, for the first time since I started wearing ties, I got a stain on my tie. My best silk tie. Washing it out had no effect whatsoever. Majorly bummed, I stomped down to the local drycleaners to see if they could fix it.
Got it back today. Stain is GONE. Amazing. I don't want to think of what chemicals they used to do that, but the advantage is undeniable.