Is there anyway to sterilize these? Maybe sterilize isn't the word, but protect yourself from any harmful bacteria or viruses?
Just read this:
Rubbing alcohol as an antiseptic
Rubbing alcohol is usually isopropyl alcohol not ethyl alcohol. Drinking alcohol is usually ethyl alcohol. Rubbing alcohol is not a good antiseptic because it contains only 40% alcohol. To be a good antiseptic Isopropyl Alcohol must contain at least 70% alcohol. Seventy percent Isopropyl or ethyl alcohol will kill bacteria, virus and fungus in 15 to 30 seconds.
Please visit Wikipedia "alcohol rubs" or "hand antiseptic" for an extensive discussion on the antiseptic (germ killing) properties of ethyl and isopropyl alcohols.