How can i get rid of the little blisters on my arm that may be staph?

Culture: Before any good treatment can be tried, you first need to be sure what it is. Not every bump or blister on the skin is staph. If you haven't already, see your doc and if there is any discharge, they might elect to do a culture - which would tell you for sure what bacteria and what antibiotic is needed. It might also be viral infection (like shingles), for which antibiotics would be of no help.