While many people make a point of taking their shoes off when they're inside, if you're not someone who bothers, there's a good chance you're tracking in all sorts of nasty things from outside. As you stroll through the world, the soles of your shoes are picking up germs, molds, and other allergens. And if you walk through the house wearing those same shoes, it's easy to see how it all might transfer to your floors and rugs.
This is obviously not the end of the world, since plenty of people wear their shoes inside without ever having a problem. But many experts still agree it's a good idea to de-shoe before proceeding inside whenever possible — especially if you spend time chilling on the floor, or live with other people who do.
"I would recommend taking them off at the door — particularly if you have small children or infants crawling around," Dr. Nidhi Ghildayal, infectious disease specialist and Ph.D. from the University of Minnesota School of Public Health, tells Bustle. "Bacteria found on shoes can cause sicknesses of varying severity, and those dealing with allergies can find they are exacerbated by mold unknowingly tracked in." Here are a few gross facts about wearing shoes inside, according to experts.