My grandson has allergies and I have a "long-haired" cat. The two typically do not go well together. I usually have to keep antihistamines on hand when he visits. Since I have had the BreatheSmart unit in my home, my grandson's allergies appear to be much less of a problem. On a side note, my cat loves the unit and lays in front of it all day long.
I am a Very Satisfied Customer!