Marketing. It’s a word that often causes pet business owners to groan. There are so many advertising options and a lot of those options are expensive. Google ad words. Pay-per-Click Advertising (also called PPC). Pet sitting directories. Online Yellow Page advertising. The list goes on and on of possible marketing options available to pet business owners. What really works though? What do you really need to do to have your business phone ring with new client calls month after month?