Use a variety of avenues to connect to your clients.  You have to reach a potential client at least 7 times before they begin to show interest in what you do, so reaching out in print, social media, billboards, radio, newspaper, whatever you can afford can certainly impact people in different ways and different times.  Also, know who your clients are and target those clients.  That way you can focus your advertising dollars in a more effective way.  Good Luck