People are using Facebook more than ever at the tune of 1.4 billion people and approximately 900 visits per day. With Facebook Ads you are able to target specific audiences based on their age, location, interests, etc.
By targeting your audience, you are able to choose who sees your ads, which in turn makes them relevant for the people who view them. As a result, you are able to see real effects from your ads which can help you tweak them as needed.
Below is an infographics on how to get more traffic to your place of business fast: