u/IOWARIZONA

Hello!

I would like to clean my grandparents’ headstone, which is granite. It probably hasn’t been cleaned in its 30+ year existence, so there is some lichen and black mildewy stuff.

Do you usually use D2 in these cases? And would you spray and let it work on its own or do you scrub and rinse it off?

Any need to use soap before or after?

Thanks!