Restricted-entry interval
The period after a pesticide application during which nobody may enter the treated area without protective equipment.
It is printed on the label, it varies from a few hours to a couple of days by product, and it is a legal requirement rather than a guideline. The clock starts when the application ends.
The failure mode is almost never deliberate. It is a crew member sent to change cups on a green that was sprayed at six that morning, by somebody who wasn't on the radio when the spray plan changed. That is a records problem before it is a safety problem.
If your job board knows what was sprayed and when, it can refuse to send anybody onto that ground until the interval has cleared. That check costs nothing and catches the one case a year that matters.
What you're required to record for a pesticide application, how re-entry intervals should actually be managed on a course open to the public, and how to make the record a by-product of the work.