Raising the sprinkler heads is part of routine sprinkler maintenance.....Don the Donunut man charges about $2.50 a head (plus service call)to dig out and put more sand under the head. He also checks for leaks(replaces leaky sprinkler heads) and realign the sprinkling pattern. BTW Dons son is now doing a majority of the business.
A donut is critical for without donuts, the lawnmowers would break or crack the sprinkler head...which would cause bigger problems (and costs).
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