I have horrible airborne allergies: dust mites, trees, weeds, grasses, you name it. I started using these Filtrete filters years ago, and have never once been dissatisfied. They always work well to clear the air, and I do change them every 3 months on the dot. Unfortunately, not all retailers sell them!
I have been using these filters for several years and am very pleased with them. I replace them every three months and they do a good job at reducing the allergens in my home.
I have used these filters for a new house since 2006. Our house in Florida where the air conditioner runs often stays clean and fresh for the 3 months between changes.