Stock up on Rubbing Alcohol. I buy 6 bottles of Rubbing Alcohol at the big box store for like $2 a bottle. I put a spray nozzle on it and spray tables, doorknobs, lav passes, keyboard, and my own hands throughout the day.
6 bottles last me a year. It has made a huge difference in my health. Though weak bleach solution will do it, it has a strong odor that some people, including myself can't handle... I could use a bit of bleach mixed with water at the end of the day, but I can't wait sometimes, I can use the alcohol all the time.
Alcohol is the active ingredient in hand sanitizers without the gel or fragrance. That is also a plus for me. If dryness is an issue, a little lotion goes a long way. You can even make your own hand sanitizer by mixing rubbing alcohol with your favorite hand lotion, but test it a little bit to make sure it's stable. Use an old pump bottle, or your next empty sanitizer dispenser.