Other "guaranteed" rental sources besides Section 8

[Tracey J Shanklin]

I once delivered medicines to single family houses here in Missouri, whose residents where adults that couldn't live on their own and needed caretakers 24 hours a day.  I am interested in finding out how to acquire a similar arrangement for my property.  Does anyone know of an agency to contact or how I can get information on such a facility?  Thank you for your input!