Detects biological matter not visible to the human eye such as: Urine, Semen, Saliva, Vomit, Feces and Blood Residue * Travel Sized * UV LED Technology * The HOTEL INSPECTOR offers superior UV LED LIGHT projection and reliability, while you detect the cleanliness of your hotel room. * Travel with confidence when you can inspect hotel accommodations for cleanliness with the HOTEL INSPECTOR UV LIGHT STAIN FINDER.