In most places in Switzerland, household rubbish disposal and collection is charged for. Household refuse (except dangerous and cumbersome items, batteries, sofas, electrical appliances etc.) in theory, is only to be collected if it is in bags which either have a payment sticker attached, or in official bags with the surcharge paid when the bags are purchased at the cash register of several stores (e.g. coop, Migros, Post office).
In Zurich they are called Züri-Säcke. Their volumes are 17, 35, 60 or 110 liter.