It’s kind of funny that I see videos of the tool to cut the circle for the donut. The vids say you have to periodically recut the circle and remove the grass because of the st Augustine. So the donuts don’t really stop the the grass overgrowth anyhow.
A properly installed head should be flush with the ground and shouldn’t be damaged by driving over them. None of mine are close enough to the street where a vehicle will hit them. I’ll go without for a while and see if I’m right or learn the hard way.
