A device used for applying an antiseptic preparation to a surgical site of a patient prior to surgery outside of an operating theater. A loose-fitting bag is provided which encloses the surgical site by securing the open end(s) to the patient by closing means. A method and apparatus are also provided for releasing antiseptic into the interior of the bag. The method provides that the surgical site can be scrubbed within the bag so as to properly prepare the skin for surgery. A temperature indicator for the antiseptic preparation is also provided.