I have always had a hard time with indoor allergies and my allergist has always recommended a whole house filtration unit. This product has saved me that HUGE investment, as it reduces indoor allergens so well. I have 2 dogs and noticed the positive change immediately after replacing my standard air filter. FANTASTIC PRODUCT for an affordable price! Remember, you will pay more now and PAY LESS LATER when you need less antihistamines to get through the day.