Toilet seat covers are generally held in a dispenser, allowing the users to access one cover at a time, without making unnecessary contact with additional toilet seat covers.
While toilet seat covers give public toilet users a sense of security, studies have shown they do not necessarily protect a toilet user from disease. For example, if a toilet user is negligent enough to place a toilet-seat cover while the seat is still wet with liquid waste the fluids can soak through the cover and make contact with the user.[1]
Most toilet seat covers also have two sides, a shiny side that is impregnated with wax and a mild germicide and a dull side. If used properly, the shiny side should face the seat