I was skeptical, but even the fancy filters at Home Depot cost more, so I thought it was worth a shot. We have 3 dogs, and live on a small family farm, so there’s lots of dust, dirt, and hair. I have to say I’ve noticed a difference. If I dust once a week it’s fine, I think I could push it even farther, and I think the house in general smells better. It doesn’t have that “dog smell” I would try to dust, vacuum, and febreeze out of the house. I’m really happy, we’ve changed our filter out once a ...