Hello, my mum has a really bad allergy to my cats dander, so much so, she doesn't come round a lot, which is sad as my little boy loves to see her at our house, as I do too. So, do any of you know ways to reduce dander or to help get rid of it in the air? Would an air purifier help reduce it? We brush them regularly and hoover all the time, but it doesn't seem to make any difference? Many thanks for your help!