Kirby Micron Filtration MicroAllergen Technology
My future son in law can not sleep at our house do to a cat dander allergy. They have a cat (it was my daughters - a fairly dander free variety) and bought the older version of this on amazon for their home- said he got major relief from the minor irritation his cat causes. We have 2 cats - one low dander - one high dander - poor guy has to take benadryl after being in our house an hour or so.
Well based on his results with the older version - I bought this one - clears a major area in minutes in the room we are in - then put it in the guest room for the night - happy to say - allergy free the entire night! IT WORKS.... we put it in our bedroom when they are not visiting - and surprisingly - we both sleep much better - wake up refreshed and without "scratchy eyes and throats" ... so all in all - well worth the price paid!