Got this to help keep the kitty boxes odor in their place!  This works so well that my allergies have been reduced and you can feel the difference in the air, as it is so clean and pure!  Would highly recommend this product.  One issue is the dial, and you must use it gently when you turn it, it can break off easily if you force it.  This could be a fix for the company to take care of.  But other than that, the product is Purrfect!!