Can Public toilets be made free?

I would like to add a few points to this topic.
--Toilets should be made totally free
Firstly, I believe that payment is not the only constraint as there are several free public toilets in Mumbai but still some people prefer open-air. But yeh..cost may be one of the compounding factors.I would feel people prefer open-air for these reasons
- Waiting time in public toilets especially in the mornings
- unhygenic condition
- distance from home
- and ofcourse cost attached, if any
Few people would be spending handsomely on bidis and gutka but prefer not spending Re 1 in public toilets. But if the above 4 points are satisfied then the things will change drastically.

Generally public toilets are road-side standalone building. Its terraces can be used to host hoardings. On-road hoardings fetch better rentals.Why i am coming to on-road hoarding is because these public (community) toilets are generally used by chawl/hutment people where there are fewer earning members and many uneducated-dependent members. Hence inside advirtisement may not be very lucrative for advirtising companies.If such concepts can be combined and more public toilets are opened (to reduce the waiting time and proxmity) then I would say our country will definitely become cleaner.

--Ashish Kanak