Wellllllll I've been camping with a plastic fold-able rug ever since I worried that my tent's floor was too thin; as a side benefit there's less need to sweep the tent's floor daily. My current plan is to use a few door mats at the TT's entrance(one outside, one inside) to keep exterior dirt at a minimum and one scatter rug next to the bed for comfort. I bought my same as RV store's ugly patterns rug online from either QVC or HSN. Cost much less than the RV shops. Wish I'd seen this website before I bought since they have a nice selection of patterns and colours:
outdoor rugs I clean my rug with a hose and Dawn. Easy peasy.