For the more detailed description please follow this link Wearing Shoes In The House Is Nasty, Says Science
In short............ you really should only wear shoes outdoors!
Still not convinced? There's more..... Should you take your shoes off inside the house?
I see the evidence of shoes worn in the home everyday. Foot traffic dirt will build up over time and will occur if you wear shoes or not! Wearing shoes will bring in all the extra nasties and undesirables you really could do without in your home.
People with babies and young children who love to lie and play on the floor need a clean environment to play on, so why expose them to the germs your shoes can bring in?
Regular carpet cleaning will keep your carpets not only clean on the inside but looking and smelling fresh too.