I used this product for over a week and never seen a change in my symptoms or my daughters symptoms. Maybe it helps other people's allergies, but it never helped ours. Performance My daughter and I both have allergies. I have developed mild indoor allergies to dust and mold in the last few years and my daughter's allergies moderate. I used this for about a week and never noticed a change in our symptoms. I don't know how it's suppose to help with indoor allergies, as it seemed too heavily scented to really do any good. I've seen good reviews that it has helped others, so maybe there are some allergies it does help. It wasn't worth the expensive price because it didn't even have a good scent, so I couldn't even use this to make our house smell good. I finally trashed it after a week. Scent This is a really heavy scent. I wouldn't use it if heavy your easily irritating perfumes and fragrances. I love some of Fabreeze's scents, but this one smelled nasty. It didn't make our house smell any better after using it, in fact it probably made it smell worse after mixed with cooking odors and the cat box odors.