First of all, the smell...I'm not just using it in my bathroom. My daughter just moved and the shower at her new place was really disgusting. We both tried everything to clean the mildew out of the tile grout, but nothing worked. After reading the reviews for Athos, I decided to give it a shot. What a difference. The brush is perfect for getting into the really narrow grout lines. I'm always skeptical when I read online reviews, but this is the real deal!