My mother is using a rollator (walker with 4 wheels) after a fall and TBI. We live in a cold snowy climate and after coming inside the wheels are covered with wet dirty snow that gets tracked all over the floors leaving them dirty, wet and slippery. Overall not the end of the world but I am hoping that someone has encountered this problem and has an ingenious solution that I haven't thought of yet. Any help would be much appreciated. Thanks!