US Patent 8466433 Integrated footwear sanitizing and deodorizing system

Introducing ultraviolet (UV) light to alter the environment inside a shoe or other footwear destroys microorganisms or inhibits their growth. Visible light can also be used to prevent further growth. Introducing forced air flow through the footwear removes dampness in and thereby deodorizes the footwear. A preferred embodiment comprises an adjustable shoe tree equipped with a UV germicidal light source and electronic safeguards that prevent appreciable leakage of UV radiation outside the shoe.