Another reason for lack of home dental care for pets is the perceived level of difficulty of the task. (healthypets.mercola.com)
Another (lesser) approach might be to negotiate different rate schedules for different levels of difficulty for the matter as a whole. (lawdepartmentmanagement.typepad.com)
The stars you earn as you progress will not only unlock new areas of operation, but also higher levels of difficulty for each area. (shortpause.com)