How do you guys handle irrigation heads in turf area? I've got some that the LCO before me has been trimming to dirt around the heads with the trimmer, these look like crop circles to me. I've got some that I keep just the bare minimum around the head cleaned out so the they can rise and retract without a problem. I've got a couple new properties that I haven't even seen where the heads are, will be running systems in the next week to find all heads. I don't like the looks of the donuts though several customers have them.