New Zealand has legalized, regulated prostitution, and so the NZ Occupation and Health Service has produced a safety manual for sex-workers that talks about all the usuals (how to unionize, smoking in the workplace, handwashing, repetitive strain injuries) as well as prostitution-specific issues. The juxtaposition of dry governmental prose in use of discussion of sex-for-hire is disorienting and interesting:
In situations where more than one worker is providing service to a client (e.g. threesomes) it is necessary to ensure that equipment such as vibrators and dildos is not used by one person and then another without being cleaned, disinfected and having a new condom put on first. Ideally each worker should have her/his own toys and equipment, which are not used by other workers. Each worker may choose to use a condom of a different colour in order to identify who has used the dildo last.
(Thanks, Derek!)
Update: Michael sez, "the Australian Capital Territory (the DC equiv) has had one since 1989. The Aussie/Kiwi rivalry goes way beyond cricket and rugby."