Continue to advertise make your environment as inviting as possible with colors don't over do it. Feel comfort about the service you are offering and the clients will come.
I would like to suggest You to create boards of your daycare centers and paste it near to your areas. Before few days I had read in an article about one preschool program, is providing daycare facility for kids, age between 5 months to 10 years old. They are also providing Breakfast, meal and lunch for all kids who have enrolled there. I saw many articles on this preschool, you can also try out such things for your daycare. Preschool has used many Resources to satisfy parents trust on them.