Someone needs to develop a public toilet that's self-cleaning but doesn't cost more than some houses. The problem is making it homeless and drug dealer proof. SF has had major problems with their self-cleaning toilets.[1] Portland succeeded, but theirs is armored to contain a velociraptor and provides limited privacy.[2]
[1] http://www.sfweekly.com/sanfrancisco/occupied-san-francisco-... [2] http://www.citylab.com/design/2012/01/why-portlands-public-t...