Dear Glenn: On one of your shows you talked about filling the legs of pantyhose with something to prevent ice dams. I can't remember what it was. My husband says I'm crazy and that it's rock salt, but that is not what you said to fill the nylons with. Thanks very much, and I love the show.

Mary, via e-mail

Dear Mary: Thanks for being such a good listener. The product that you want to stick in the pantyhose is calcium chloride. It will help melt the ice that causes the ice dams and will not damage the gutters. More information is on my Web site; type in "Ice Dams" or "Gutters."