Shoes

Science has proven that dirty shoes should be left outside the door

(ORDO NEWS) — You probably clean your shoes if you step on something dirty or disgusting (please clean up after your dog!). But when you get home, do you always take off your shoes at the door? Many people don’t. For many of them, what you put on the soles of your shoes is the last thing they think about when they get home. We are environmental chemists who have…