You can close the door on traveling salespeople (if any still exist), petition-signature gatherers, or Jehovah's Witnesses. But what if the "salesperson" is from the government?
From the Daily Mail:
Doorstep lectures on travelling without your car as army of advisers teach families about 'sustainable travel'
Hundreds of thousands of families are to be visited by travel advisers who will tell them to stop driving their cars. Armed with bus timetables and cycle route maps, they will knock on doors and lecture on the need for ‘sustainable travel’.
The doorstep campaign by the army of taxpayer-funded ‘personal travel advisers’ is part of a £156million effort by ministers to persuade people to leave their cars at home when they go to work or the shops, or take children to school.