Has anyone else experienced these black tar like pebbles that seem to pro create over and over again on the sides of my RV? And if so, how do I clean them off for good? Seems I have to use my finger nails to remove them ,and is a very timely job. Along with soap and water. I do park next to a row of Areca Palm trees. Coinsedence ?
for my car that had black spots, I used Jungle Jake a commercial degreaser that I purchased at Fleet Farm. I used a microfiber cloth and used it in some water. It worked for me. . Perhaps it will work for someone else.