It works, although it may be of less benefit if its right through your community already...
Australia brought in 14 quarantine here, just in the nick of time too. Most cases are from international travel returning. Very little community transmission here, luckily.
Currently, pax in and outbound restricted to essential and compassionate, sent to government hotels for 14 days. Aircrew can self isolate at home for 14 days, or until the next flight.
I'm lucky enough to be self isolating between flights.