Something to keep in mind that was new to me:
If you think that a hand sanitizer, like Purell, can protect you against peanut proteins, think again.
Hand sanitizers shouldn't be used to clean the hands of someone who's just touched peanuts (or other food allergens for that matter). These products are made to kill germs only - they don't wash your hands and they can't always remove allergenic proteins like peanuts or shellfish from your hands.
Just something to keep in mind. Handwashing with soap and water is the best way to remove peanut residue or other food allergens from your hands (or body).
Not that I'm ever touching peanuts, but it's good to keep in mind.