THIS IS A GOOD PRODUCT
WE USE FOR DOG ODOR AND A BASEMENT.  I SWEAR THIS HELPS 100%. R OLD BASEMENT DOESN'T SMELL LIKE A BASEMENT AND MY SON'S HOUSE WITH TWO BIG DOGS SMELLS MUCH MUCH BETTER. THERE IS NO FILTER TO CHANGE EVER AND JUST PLUG IN AND WALK AWAY. DOES MAKE A LIGHT WHITE NOISE AS ONE WOULD SAY.
Rating: 5 stars