Since fashion stores offer a wide range of clothing, they are often full of dust. I find many visitors leave stores because their eyes turn red. I recently found a fashion store with low dust level. Differently from other stores, it hung the whole clothing over the ground and maintained the floor clean. It was very comfortable for me to stay inside, I ended up buying a few jackets and, more importantly, I want to revisit this store. When the store is dust free, more visitors stay longer and they may spend more.