Here's a thought, T: From your post it sounds like you have done a good job of putting out out info about your business, but in my experience it is a better idea to show people your face.
Traditionally, IF the docs get the business cards, (often they don't), they put them in the circular file under their desk. People in general are not going to read posted ads in grocery stores, post offices and so on...not the type of people you're looking for, anyway. Newspaper ads are okay but many people are leery of ads which offer these types of services because there is no way to determine the 'honesty' of such services or the people providing them. So......
get your face into the arena by personally visiting Senior Centers (and Agencies on Aging) and talking with the Directors there; setting up a 15 minute appointment with the local docs to present your services- (and yes, you may have to pay him/her for the time you take, but it will be worth it-because in any business MONEY TALKS); contact your local Medicaid Waiver office and see if there are contracts available through them for the type of services you want to provide.
Make up brochures or have them made up for you that clearly state what your services are; your qualifications and the type of public sector that you want to serve-above all make sure you state in your brochure WHY your service is needed. These brochures can be placed (with permission) in doctor's offices, pharmacies, businesses that sell durable medical goods, etc., and they should be handed out to everyone you come into contact with who might be able to give you a leg up.
When you meet with a doc, for instance, immediately after stating your name and rank, ("Hi, I'm RN, T"), shaking his hand and thanking him for his time your next move is to hand him a brochure, and at the same time look him squarely in the eye and say something like: "Here is my brochure, Doctor, I think you will find the information in it quite interesting". Then start talking about NOT what you WANT to do but what you are ABOUT to do.
RNs and LPNs who desire the Entrepreneural way of life-especially in the area of community nursing- need to present themselves in a Professional way. Tacking up notices in grocery stores, etc does not get it. Not if you want to be taken seriously.
I hope some of this might help, T. What you want to do is so very necessary these days...and will become more so in the days to come.
One other thought, T: While we are dealing with an increasing elderly poplulation, they are a population of folks who are of a different generational mind set. Dependence on the adult child is not nearly as common as it was 20 years ago.
Community Services for the elderly have been put in place as a direct result of Federal lobbying by the very group of people who are now deemed Senior Citizens. So, rather than seek out the adult children, it may be a faster and better way of getting your business off the ground by going to those agencies that have the programs of care already in place.
Cuts in Medicare funding are being felt in every State. The need for the Private Sector, Self Employed Nurse is here and now. In order to convince the elderly public that their out of pocket dollars will be well spent, the Entrepreneural Nurse must prove that her services are well worth it.
Keep us posted on your progress, T. We're all with you 110%!