Gym Owners: Do you have a cleaning service? Why or Why not?

The mats and bathrooms at gyms tend to get pretty filthy, yet the only cleaning I ever see is the coach and/or a well-meaning student walking around the mat spraying some kind of mixture. Gym Owners: have you every considered bringing in a nightly or weekly cleaner to do this for you? Why or why not? I feel like most students would happily throw in an extra $5 to get this done, but perhaps I'm being naive.