We often have the threads on here about getting permission. I have had a load of permission in the past when the farmer has initially said no just by being overly polite. It goes something like.
Me. Good morning sir
Farmer. Grunts
Me. I was wondering if you wanted any free pest control done on your land.
Farmer. No
Me. Ok thanks for your time sir sorry to bother you. Have a good day.
Me. Walks around ten steps away.
Farmer. Hang on. What sir if pest control
then your in ?