When we had a cat, we used these filters to keep the dander out of the air. I found that it worked great. Also -- I prefer using these filters in the spring when the pollen count is high. Keeps the allergens out of the house.
I bought this a few months ago and its amazing the difference this product makes vs. competitors...It's like night and day. Breathing the air in your home after installing this makes it worth every penny.
Lasts long and cleans the air much better than the cheap fiberglass filters we used to use. We would probably need 4 sets of the cheaper ones to get halfway close to how good these work for 3 months and still not be as good.