People rub or place Vicks VapoRub around door frames and entryways primarily as a natural pest deterrent. The strong scent of menthol, camphor, and eucalyptus helps repel insects like mosquitoes, flies, spiders, and ants from entering your home.Some individuals also apply it to door hinges to stop annoying squeaks, as the petroleum jelly acts as an effective, temporary lubricant.If you are thinking about trying this trick yourself, keep in mind:Pet Safety: Vicks contains ingredients like camphor that are highly toxic to pets. Do not use it around doors where cats or dogs might ingest it or rub against it.Placement: Instead of smearing it directly on wood where it can leave oily stains, people often dab it on cotton balls or small pieces of fabric and leave them tucked near the door frame