K.S.
Sittercity.com Care.com (one of my current clients came from Care.com) and daycarematch.com would be my suggestions. I'm a provider in IL, not back home in KS... But Olathe is big enough it should have about the same effects.
I usually use craigslist to get my daycarematch profile out in the open. Also check around, see if there is a local group of Family Childcare Providers. If not, you might try to start one up. I belong to a group locally that has many home daycare providers, we pass on potential clients to those with openings, we have school year monthly meetings (important ones that count toward the required in-service hours.. For example CPR training last month, Food program person is coming out this month).
Otherwise, I'm out of ideas. I know it's tough to get clients.