Angie has blogged about using Tilex on clothes:
http://youlookfab.com/2006/06/.....s-wonders/
I have never tried it myself. I have used Oxy Clean successfully get stains (sweat & stubborn baby stains) out of whites - just boil water, sprinkle on some Oxyclean and let it soak for a bit (maybe an hour or so) and then wash at the hottest setting possible. I have only used this method on cottons though. I have also tried the lemon juice and sunlight method on an antique linen table cloth and it worked well.