I saw this in the 6/13/2006 Dollar Stretcher Tips Newsletter:
Carpet Spot Cleaning
A professional recently told me that a great spot remover and stain remover for carpeting is to spray it with Windex. I went to the store and bought the original Windex window cleaner (there are several new varieties). I used the original Windex on several stains in the carpet, including a stain where my cat had gotten sick and I could not get all the stain out before. It came out easily! I used a plain white paper towel to rub out the stain where I had sprayed the Windex. It worked great! Just make sure you test your carpet in an inconspicuous area first. Dianna B. of Williamsburg, Virginia