“In many places in Switzerland, household rubbish disposal and collection is charged for. Household refuse 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.” (Wikipedia)
Can anyone provide more information about where to buy these stickers/bags, how much they cost, do they have specific names in German, etc.?
In Basel they are called "Bebbi Sag" and you have to ask the cashier for them in one of the supermarkets. They are blue and come in different sizes. I think the 30 Litre bags cost around 25CHF for around 10 bags (not sure of exact price at the moment).
You better bookmark the website of your commune QTBlair.
You have to buy bag stickers. A list of shops that sell them can be found here, and a disposal calendar is here. Bags are collected every Friday in Rombach.