|You are probably not washing the area well enough. Ron, recent studies have shown that after initial infection, you cannot get any new areas of lesions unless they have been touched by the initial Urishiol. Not to flame, but just corrective criticism. =]
Wash the area well, and then rub alcohol on the site with a cottonball forcefully with care (not too hard, and don't baby it.)You want to burst the little bubbles and get all the pus out, while cleaning the area with alcohol, as to prevent re-infection.
(NOT A MEDICAL DOCTOR)