How do I clean a moldy and mossy brick walkway?
Mold succumbs pretty easily to dilute bleach solution, spread on with an old sponge mop. Just take appropriate precautions for protecting yourself. Bear in mind that it may take an hour or more to disappear, so don’t escalate the concentration until you are sure the weak solution (1:20 is a good starting point) hasn’t worked. Moss is a different animal altogether, in my experience. (I know, it’s not really an animal.) I use a power washer with regular water on moss where it grows on the brick, but at a pressure that will not dislodge the fine sand between the bricks. Bob Vila had a person write in with a bleach option for the moss, however. Take a look at: http://www.bobvila.com/wwwboard/messages/225343.html . Problem for me with this solution (no pun intended) is that it uses full-strength bleach. We have a lot of frogs in our area, and there is evidence that chlorine can cause malformations and death in frogs. I need those frogs to take care of mosquito larvae after rains, and you ma
