We hear horror stories all the time of people showering and not wearing sandals in turn catching athletes foot or other fungus feet problems. Even though they are mopped every day many times its by a 16 year old who wants to get out of there so they don’t give the enzymes time to work properly. Also mops aren’t the best either as they have no extraction power.
If we come in we would hit the tile with 200 degree water at around 900 lbs of pressure, and extract all the gunk back into the waste tank. They really should do this once every 3 months or so. As you all know bacteria grows rapidly in damp warm locations. This means locker rooms are 100% ideal for their growth and can severely effect your overall health.