I have large mats at my back and front doors for removing boots/shoes and all my daycare kids know that I expect them to do this upon entering the house. My issue is that we are usually outdoors in the back when pickup time happens. The parents are wearing their snowy/dirty boots through my house from front to back without taking them off. This includes a 40 ft run of hardwood and light coloured ceramic tile that they have to cross. I'm infuriated, as my hardwood is all scratched from stones in their boots/damaged from salt/snow etc. How do I address this tactfully with the parents? I'm so shocked by the lack of courtesy, and now my hallway floors need refinishing. Do I have to get a 40ft runner made from front to back of my house LOL!