A more thorough explanation:

A Green River Ordinance is a local law that protects residents from unwanted door-to-door salespeople and peddlers. This law typically requires salespeople to obtain prior consent before soliciting residents in their homes.

The ordinance is named after Green River, Wyoming, which was the first city to enact this type of law in the early 1900s. Since then, many other cities and towns throughout the United States have adopted similar laws.

For example, if a salesperson comes to your door and tries to sell you a product without your permission, they would be violating the Green River Ordinance. However, if they had obtained your consent beforehand, they would be allowed to solicit you.

The Green River Ordinance is designed to protect residents from unwanted solicitation and to give them control over who they allow into their homes. By requiring salespeople to obtain prior consent, the law helps to prevent scams and other fraudulent activities.