Bad ich problems. What can i do?

My friends mom had a fish tank in her cl room until the janitor tore it down over the summer. She gave my a bunch of stuff like baby gr a couple of rocks, and a baby net. she said that at the time she didn't have any problems with ich or anything else, so i gladly took the offers. When I got home i rinsed everything off in cold water, but that was pretty much it. about a week later Ich shows up. On another post i read to take out all the gravel and ornaments and treat the water that way. I did treat with a product called cure- ick and another called aquari- sol. Both products are older, and also from the stuff that Tami gave me. Can these products go bad? also the cure- ick is a blu liquid and all it says to do 10 drops per gallon it does not say how often. The Aquari- sol says 12 drops to 10 gallons once a week to prevent disease. for treatment raise water to 85 degrees. I've read that warm water will multiply the ich quicker. Another problem with raising the temp is that my heater is automaticly set so i can't fluctuate the temp of the tank. My mom told me to wash everything in scorching water and that should kill the stuff that i took out of the tank. Will that really work? I really need help.