The five rappen cost in 2016 saw the number of plastic bags being used, and then thrown away, fall by 84% in the first year, according to official figures.
Since then, consumers have continued to snub plastic bags at the checkout, reports the Tages Anzeiger newspaper.
Consumers either take their own bags shopping or buy environmentally-friendly cellulose versions.
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Why don’t the Swiss recycle more plastic?
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For 30 days, swissinfo.ch journalist Susan Misicka saved all of her plastic garbage, but found that not even half of it could be recycled.
Most plastic gets thrown away and is burned, according to the NGO Ocean Care.
“People don’t like it when they are forbidden from doing something,” University of St Gallen economics professor Johanna Gollnhofer told the Tages Anzeiger.
“It’s not enough to tell people that something is bad. You have to break their habits, or at least get them to question their consumption habits.”
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How much of a problem is single-use plastic?
In the EU, many everyday single-use plastic items are banned. Should the Swiss adopt a similar law?
Is your place of origin, your Heimatort, important to you?
Every Swiss citizen has a Heimatort, a place of origin, but many have never visited theirs. What’s your relationship with your Heimatort? What does it mean to you?
In Switzerland more people are being referred to electrical therapies or psychedelic-assisted psychotherapy. Are there similar approaches where you live?
Pope was a person full of respect: Swiss president
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Swiss president Karin Keller-Sutter, who is attending the funeral of Pope Francis, says the pontiff was always full of respect.
Ex-sect member sentenced in Zurich for sexual abuse
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Zurich District Court has sentenced a former member of the globally active sect "Children of God" to a partial prison sentence.
SNB chairman does not rule out slowdown in Swiss growth
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Martin Schlegel, chairman of the Swiss National Bank (SNB), does not rule out a weakening of the Swiss economy in light of the tariff dispute.
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