soy sauce 8 tablespoons of worcestershire sauce + 2 tbsp of water, or, if you want a sweeter sub to make quickly: 90 ml of balsamic vinegar + 240 ml of molasses, then add sugar to desired sweetness & whip them together to make a smooth sauce.
We put down some wood chip mulch around our foundation plantings last spring. Soon afterward I started noticing tiny black specks on the house siding, and they're virtually impossible to remove. Did the mulch cause the specks? How do I get rid of them?