Keep the air in your home smelling great with the SUNSTAR QAIS-air- 04 targeted pet odor eliminator. Operating at all times, it clears the air and eliminates pet odors directly at their source. In fact, powered by PCO technology, it uses UV light and photocatalyst deodorization. Together, this method combats odors. Safe for pets and humans, it mounts on the wall directly over the litter box, pee pad, or another bathroom area. It works because the smell of ammonia—which is the main component of bathroom odors—rises because it is lighter than air. Then, this gadget catches and deodorizes the ammonia before the smell spreads to the rest of the room. Overall, designed with pets in mind, it uses safe low-voltage cords. And its whisper-quiet motor doesn't detract a bit from its stylish design.