Banishes odors, allergies, and, I am confident, germs too.
My wife and I visited a friend who had a dog, so our three big dogs stayed in the small bedroom with us at night.  Air conditioning off and because of traffic noise the windows were closed.  Normally we are not allergic to our dogs but in the closed space we were - and the room smelled &#34;doggy&#34; in the morning.  Got one of these.  In an hour the doggy smell was gone - and no more allergies.  I could not visit my mother's house for more than an hour due to her cat.  With this, I can stay 4+ hours.  Kills odors in bathrooms, kitchens, garage (lawnmower).  My daughter's basement (hot water heat so no air movement) no longer smells musty.  Even helps with new carpet and paint smell (but for the big jobs I use an air-zone machine to do the heavy lifting).  Whenever we are in a hospital room, I plug in three of these and close the door and our room air smells cleaner than the hallway.  Costs less than 5 cents a day electricity; a new bulb every year ($8-$15, so look around).  CONS: a little noisy, blue light is a nuisance in a dark room, falls out of loose outlets.  Otherwise they are great - compare to a corded device.  I have given dozens away (sometimes the manufacture sells refurbished) and received many thanks.
Rating: 5 stars