Why Do Rugs Make the Floor Turn Yellow?
Rugs are not the only items that can cause yellow marks or spots on flooring. Any item with a rubber base that comes in contact with the floor could cause yellowing. Common household items that may be a problem include stepping stools with rubber feet, rubber wheels on carts or rolling shelves and toys with rubber parts or wheels, like a child's tricycle, that are allowed to sit in one place on the floor for any length of time.