The University of Arizona published a report claiming "Traces of bacteria were found on the bottom and inside of 90% shoes." The bacterial strains ranging from ones that cause intestine and urinary tract infections, to meningitis, pneumonia, and respiratory issues.
Basically, shoes, especially the bottom of shoes, is a transport for a lot of nasty filth. Leave your shoes at your front door when entering your home. If you don't, you're spreading those germs throughout your house, only to get circulated by others.
The 2016 study by researchers at the University of Arizona set the germophobic world on fire with a report that said the average shoe sole is covered with 421,000 bacteria and that 90 percent of those bacteria transfer directly to a clean tile floor on the first contact. A 2017 study on shoe bacteria by the University of Houston showed that more than 26 percent of shoes examined test positive for C. diff, a bacteria that causes a potentially deadly super diarrhea. That's more than triple the amount typically found in kitchens and bathrooms.
This is why we have a strict "No Shoes" policy on our mat and we obsess over making sure people kick off their shoes before they proceed on the mat to place their gloves on top of a bag.
Our team takes a lot of pride in our studio by cleaning it several times a day. During a typical weekday, we will completely clean the studio front to back twice a day. This includes mopping the entire studio (mat area and all walkways), cleaning the restrooms, disinfecting the bags and wiping the counters down. However, we also vacuum between each round and spot mop after each warm-up and class.
Have you ever wondered where some of our staff go while you're stretching? They head to our restrooms to clean them.
On top of that, every Saturday we perform a studio "Deep Clean" where we spend extra time cleaning the entire studio. This includes wiping out the lockers, cleaning windows, ledges and other hard to reach places. On Saturdays, we also run a professional mat scrubber for about 2 hours on the mats which returns them to "like new" condition.
Bacteria is all around us and not all bacteria is bad. Still, our advice is when you're in the studio or your home, remove the shoes.