Can mySql automatically delete an entry based on a date?

Can I set up mysql so that, on a predetermined date, an entry will automatically be deleted? For example, in a job-posting database, if the viewer adding the job posting wants to, the ad they place will only run to a certain date which they will determine, then mysql will automatically delete their ad right after the predetermined date. Is this possible, so that I dont have old ads that are no longer valid, and have to remove them myself?

You can use a cron job to accomplish this, it can just call a PHP script that deletes any old records.