Although there's no Swiss law forbidding you to flush your toilet after 22:00, the local custom is not to, and even many rental contracts write down in strong t

Although there's no Swiss law forbidding you to flush your toilet after 22:00, the local custom is not to, and even many rental contracts write down in strong terms the quiet times and what you cannot do during them - no mowing around lunch and on Sundays, no showers at 3am, and the list goes on, with the same point: do not bother your neighbours. Also don't let your car engine running!