What can be used on my feet and hands for celluitist?

Cellulitis: Cellulitis is most often the result of an infection, usually requiring oral or even intravenous antibiotics in severe cases. The cause of cellulitis needs to be known. Inflammatory reactions can be treated with anti-inflammaory medication. Consult with physician.

You need : To see a doctor as this usually will require an oral antibioitc. However, that is assuming your diagnosis is correct which I do not think it is. Having a cellulitis independently on your hands and feet would mean you have multiple infections going on which while possible is unlikely.