I really have an overall aversion to the use of ground cloths, especially in rain areas. My preference is to find camp sites with good drainage and an good overall surface. However, that is not always doable, so ground cloths do have a place in my kit. Instead of buying the expensive ones made by the manufacturer, I simply go to Lowes or Home Depot and buy a box of the painter plastic. The plastic rolls come in varying thickness, so you can choose the level of protection that is right for your needs. I take the plastic roll out of the box, cut out 4 or 5 of them based on the footprint of my tent and there you go. Not only do you save a ton of money, but these things last forever. I carried one of them with me for over 6 months as I went up through Alaska and other than dirt and grime, it was in great shape. Long distance travelers can cut out 3 or 4 of them and leave the spares with their resupply person and then have them mailed to a resupply point when needed.