We have found on our own family headstones that an annual cleaning with a sprayed-on application of Dawn dishwashing liquid and a light scrub brushing works extremely well and prevents that nasty lichen from forming. No rinsing required - the next rain will take care of that.
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"I'm a Setter man.
Not because I think they're better than the other breeds,
but because I'm a romantic - stuck on tradition - and to me, a Setter just "belongs" in the grouse picture."
George King, "That's Ruff", 2010 - a timeless classic.
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