An anti-infective covering for an implantable medical device is described. The covering may be a polymeric boot that comprises an anti-infective agent in an amount effective to prevent an infection when implanted in a pocket of a patient. The boot is configured to snuggly engage at least a portion of the implantable medical device. The boot may contain a side hole that allows a housing of the implantable medical device to serve as a return electrode. The boot may be placed about the implantable medical device to render the device anti-infective.