Hello. I was just wondering if anybody has an idea of how to hide this unsightly moss/gunk that builds up every time it rains. I clean it regularly however when it rains it just builds up again and goes onto my paving also. Neighbour had it power hosed the other day so all the crap comes into mine. No point in a wooden frame of some kind as I have already put some fence panels up but the moss is starting to penetrate that now. Any ideas would be great. Thanks in advance.