A method of treating or preventing one or both of a bacterial infection or fungal infection of a foot of a subject includes combining a diluent and at least one of a clindamycin solution or an erythromycin solution to form a footbath solution. The method may further include topically administering the footbath solution to the subject. Administering may include contacting with the footbath solution a skin area of the foot of the subject that is infected or suspected to be infected.