I would like to try using a garden pump sprayer to clean sprinkler heads, particularly those that are well out of reach. Does this potentially negatively affect the head? Could this result in an unintentional activation?
Why do you want to clean them??
Technically it is not supposed to be done.
Depending on the head yes you might activate it.
You can dust or blow debris off the sprinkler, just would not use high pressure.
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