@johnbishop and all...I'm at the top of the list with this right now. I spend so much time in the home, with my cat and no current cleaning help, that I really need to address the issue. I've had several weeks of asthma and breathing issues that I must address. So, I'll ck out the Air Doctor site and ck w/Sue, @sueinmn as well.
Thanks again. Blessings, elizabeth