I have an air purifier which I use in the spare bathroom which hosts my cats' litter box.
It works wonders--cannot even smell the poo. It would probably work well for your situation as well. It does have an ionizer, which I always have on. So I'm not sure if it wouldn't work without the ionizer on.
It's a HEPA air purifier which I purchased at a regional grocery/department store for like $70. I have seen them at places like Sears, Wal-Mart, etc.
Stumbled into Primal due to food allergies, and subsequent elimination of non-primal foods.
Start Gluten-Free/Soy-Free: December 2012; start weight 158lbs, Ladies size 6
Start Primal: March 2013, start weight 150lbs, Ladies size 6
Current: 132lbs, Ladies size 2
26lbs lost since cutting the crap.