This self-cleaning installment will be open for business Friday and Saturday nights and disappear during the day. It's meant to deter men from using the usual places like alleyways and trees after a night of drinking.
via 7 News Perth
Supporters of this system say it's better than a permanent public bathroom because it doesn't stick around long enough to invite vandalism and other unsavory behaviors. It's also more compact so it allows places that don't have room for a full bathroom to fulfill the need of a late night passer-by without becoming a permanent, unsightly fixture.