All the DC monuments should be closed, like during the sequester. Think of the moolah that will be saved. ////s
Maybe it’s just black mildew from our never-ending blasted rain, this summer.
/might as well be on Venus
If the humidity in my snake houses gets too high, this stuff pops up.
A spritz of hydrogen peroxide knocks it right out.
Now send me my money for solving the problem.