Add a pleasant fragrance to your portable toilets by placing an Air Fresher Disk inside the toilet. Each disk is saturated with one of our unique fragrances. They are simple to use and extremely economical. Typically, disks are placed on tissue rods, behind vent pipes, on A hook or other out of the way places, and can be replaced with each service or less frequently. This fragrance enhancer is an improvement that your customers will notice.