Enforcing garage sale rule

If an HOA has a rule for only one garage sale per year, how can it really be enforced? What would keep someone from having a sale whenever they wanted? After all, the CCR's say a person must be given three warnings before being fined; by then the sale is way in the past.

It isn't the HOA that has rules on Garage/Yard sales. The city and county has them too. We don't have garage/yard sales on sundays - thursday in my area. There are a limited amount we can have them too. A person having continous sales can be reported to the city business or code department for operating a business without a license. There was a person who had one every weekend before they made them get a business license or quit having them.

You may want to check your local laws/ordinances on how they handle excessive garage/yard sales.