For pet birds I have a goffin cockatoo, congo grey, green cheek and a blue crown. The grey, green cheek and blue crown were resue birds. I also have quite a few breeder birds.
Other pets I have are 7 Chinchillas, a sugar-glider, four cats and two dogs. I am looking to get another sugar-glider.
I really don't have much hope for finding an air filter. Most of them sound like they are making many empty or impossible promises. I just ordered a surroundair filter. Am going to put it in one of the small rooms to see how it does. Because of electrical problems I cannot use an ozone one.
What I have been doing is concentrating on ventilating the area. Now that it is summer it is working well, but will be a problem again in the winter.
What have you tried that does not work. What animal dander are you controlling?