Having worked for a gov't agency in a capacity where I needed to go on private property, I learned that it can be a health hazard.
There were a few incidents where I told my supervisor if he thought it was that important that someone go on that property again, maybe he should go. I suggested that he make sure a deputy sheriff went with him. A deputy sheriff shot and killed a property owner, while he was on his own property, over a dispute about toxic spray. Not sure how that ended in court.