As your parents' care is almost bound to become unsustainable at home, it is better to move them sooner, while they can still function comparatively well, than later when their options will be far more limited and the change more drastic.
Also following suit from CW: there are several Continued Care Facilities in your area which look promising and should be able to accommodate your parents as a couple.
I've googled home health care agencies in Punxsutawney, PA and came up with several, although after reading your profile I think what you really need to consider is a long term care option.
As your parents' care is almost bound to become unsustainable at home, it is better to move them sooner, while they can still function comparatively well, than later when their options will be far more limited and the change more drastic.
Also following suit from CW: there are several Continued Care Facilities in your area which look promising and should be able to accommodate your parents as a couple.