Easiest way to remove stubborn water spots (from sprinklers) ?
Short of using a mild compound,is there a solution for removing the spots?

 

I recently used Gyeon Water Spot remover for the exact same purpose. Seems the management company forgot to tell me when they were turning on the sprinklers!
Very good product, like all the Gyeon products, and easily purchased from Amazon. Stuff works great and is easy to use.
Good Luck,