Hi to everyone and hugs to all the fuzzies. I would like to say that I tried the air purifiers that had filters and it just became too costly. If you have many ferrets and or a shelter with many , many ferrets, it takes allot to make these things work properly. You have to change the filters at least once a month instead of 3 months which is recommended. The filters are not inexpensive when you count it 12 times. I bought an Alpine air purifier/ionizer and I wouldn't have anything else. You simply wash the filters and it has a 3 year warranty. I liked it so much that I have began to sell them (haven't sold any yet) & to all ferret shelters who are interested, I will only charge a little over my cost. I feel that they are that good, I don't even want to make a bundle of money off of them, I would rather see them in the ferret homes/shelters. If you are interested please contact me. I have also added a few new items to my ebay auctions, I plan to add more over the weekend, take a look. sue http:[log in to unmask] [Posted in FML issue 3240]