In a bag configuration, a sanitary cover of clear plastic construction material to be placed over a handgrip of a dentist's overhead light that has an imprint, such as an arrow, on a rear bag panel in the middle of unsealed edges that in use bound an opening through which the handgrip is projected into the bag, in which the user is instructed to rub apart the unsealed edges at the observed site of the arrow, and thus neutralizes a static electricity clinging together of the unsealed edges that otherwise would be difficult to separate.