Scrape off the excess with a plastic putty knife then use a thick baking soda and water paste with a rag to clean the stain from the camper. If you wash your camper when you are done and apply a good coat of wax it will be easier to clean stains in the future. This process has worked for me.
__________________ 2013 Prime Time 230 FBS
Days camped in 2013: April to November
Days camped in 2014...about 40
Days camped in 2015...more than 2014!!
It definitely looks like artillery fungus. I have it all over my house siding and can not find anything that will remove it. I replaced all of my mulch with rocks because I don't want to mess with it anymore. Good luck.
Artillery fungus makes sense...the motorhome has been parked in my driveway...right next to a mulched hill...that is kept damp by the sprinklers every morning. Now I know better...thanks to all for your help in figuring this out!
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Certified JB Welder. Certified 3M Duct Tape installer.
Certified Farmer's Co-Op bailing wire expert. Graduate of the "Rock on the side of the Trail as a Hammer" school of motorcycle repair.
Getting old is just a matter of narrowly missing all the things that kill you.
I too have the same thing. Thought they were tar splatters until they came back after washing. I successfully used a slightly stronger that normal solution of plain ol' CAMCO RV Wash and Wax. I have a "clear coat" finish and am very cautious about baking soda or anything that may be even the slightest bit abrasive.
I have these small black/dark brown raised dots all over the drivers side of my Sunseeker. I can scratch most of the bump off with my fingernail, but the brown dot underneath needs to be polished off. Trying to figure out what that are, how to get rid of them (without having to polish them off one at a time), and how to prevent them in the future....
Baking soda won't scratch. We use it to clean delicate components. Kinda like sandblasting but you use soda instead of sand
__________________ 2013 Prime Time 230 FBS
Days camped in 2013: April to November
Days camped in 2014...about 40
Days camped in 2015...more than 2014!!