Half the time? Are we perhaps engaging in a bit of hyperbole here? I can't recall the last time I recall a public washroom being cleaned that I wanted to visit - starting at Labrador Park (which actually can get kind of messy), and moving up through One North, Bishan, and Orchard. Occasional visits to Bugis - I'll try and visit them every day for a week or so, and see if they are every being actively cleaned.