GB touched on one of my solutions. I pre-fill my skin nooks and crannies with either oil or soap. If I am digging in the dirt, I will scrape my finger nails over a bar of soap to stuff under my nails with soap. If I do not want soap on what I am handeling, I douse my hands with oil. I also use the tight fitting disposable gloves.
Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed, it is the only thing that ever has. Margaret Mead