I get people asking me all the time how I deal with clients, potential clients, and others who don’t believe in the value of Facebook ads or they don’t think Facebook ads work because they’ve tried them before and didn’t have any success. 
This video is what I tell them, and has a great analogy you can use if you ever have potential clients that don’t believe in digital marketing.
Bottom line: Of course Facebook ads work, but you’ve got to know how to do it correctly.