Getting this wonderful Mold/Unknown green substance built up from a long wet winter, and my car just sitting Thinking simple green. Any other sugestions? Product that might deter it from forming again?

I would clean that with something that wont remove the paint..hot soapy water anti bacterial dish soap maybe..then maybe spray a bit of lysol original aroudn that window seal....and were ever there was mould previously...

i used water and a little simple green. i had the same stuff you had. cleaned my trunk right up...