After using just the "run of the mill" boring, regular, ole' filters forever, I decided to try these out and oh my gosh, I was amazed at how wonderful they are. The air is fresher, cleaner and it smells remarkable in my house, and with having an 80 lb Boxer living there that's a true treat! So, don't waste time, do it now... order yours and order more than 1 because you're going to love it! You get what you pay for! Peace!