Ewww...I saw something similar on the Tyra Banks show. The whole episode involed bacteria on everyday things. This guest on the show admitted to dancing in the club without shoes on and puts her real LV multicolour speedy on the washroom floor.

I'm pretty sure my bag is clean. I never put my back pack or school tote on the bus floor...i'll always take off the backpack and hold onto it.

I never put my purses on the bathroom floor. That's what hooks on the doors are for. And when there isn't a hook. I'll wear it and clutch it underneath my arms as I go.

When I drive, my bag is always on the passenger seat or back seat if I'm driving more than one person.

Also...this is one of the many reason's why chinese and other asian families don't wear shoes in the house. They don't want to bring everything outside inside.