Drink Protection for Bars and Festivals:
A Practical Guide for Swiss Venues
Glass protection in nightlife settings has become a recognized safety priority among prevention organizations, event organizers and venue managers across Switzerland. This guide covers the available solutions, their respective advantages and limitations, and how to implement them in your establishment with minimal operational friction.
Why protect your guests' drinks?
Drink protection addresses a documented risk: the covert introduction of substances into a beverage — GHB, benzodiazepines, concentrated alcohol — in order to impair someone without their knowledge. Acting at the level of the glass is one preventive measure among others.
Offering drink protection sends a clear signal to your guests: here, their safety is taken seriously. In a nightlife market where reputation increasingly hinges on this kind of commitment, it's a genuine competitive advantage.
Available drink protection solutions
Silicone or fabric glass covers
Popular in France (ProtectYourGlass, DrinkSafe), these accessories cover the glass opening with an elastic fabric or pierceable membrane. Reusable and washable, they require collection, cleaning and re-stocking — a non-trivial logistical burden during festival operations or high-volume bar service.
Vinyl stickers (the ClearCup solution)
ClearCup takes a different approach: a single-use, paper-based vinyl sticker applied over the opening of the glass at the point of service. It closes the opening; a pre-cut opening lets the straw through. It tears if it is peeled off: it can't be removed without leaving a trace. No collection, no washing, no inventory management. Designed and sold in Switzerland, ClearCup is the local solution built for Swiss venue constraints — from a small bar to a festival with 50,000 attendees.
Dip tests
These single-use reactive strips are dipped into a suspected drink for a few seconds. A color change signals the potential presence of certain substances — GHB, ketamine, benzodiazepines — depending on the kit's reagent list. Offered on request or left accessible at the bar, they can serve as a useful complementary tool.
Their limitations are significant: scientifically contested reliability (detection varies depending on the substance and the drink tested), inapplicable to alcohol, GBL or out-of-list molecules, and the risk of a false sense of security following a negative result. Use as a complement to physical protection — never as a substitute.
What ClearCup does, and what it doesn't
✅ What ClearCup does
- Closes the opening of the glass: the straw goes through, an added substance doesn't.
- Works whatever the substance: GHB, medication, alcohol…
- Tears if it is peeled off: it can't be removed without leaving a trace.
- Applies in about 5 seconds, on dry glasses up to 10 cm in diameter.
❌ What ClearCup doesn't do
- It does not detect any drug.
- It does not protect a drink that was already contaminated before the sticker was applied.
- It does not replace staff training or an emergency protocol.
Drink protection solutions compared
| Fabric cover | Dip test | ClearCup sticker | |
|---|---|---|---|
| Ease of service | Medium | Low | High |
| Reusable | Yes | No | No |
| Logistics | Collection + washing | Stock + expiration | None |
| Visual prevention signal | Medium | Medium | Strong |
| Festival-ready | Medium | Medium | Yes |
| Principle | Physical barrier | Partial detection | Physical barrier |
| Available in Switzerland | No (import FR) | Yes (limited) | Yes |
Rolling out drink protection at your venue
In a bar or club
Integrate the sticker directly into your service protocol: every drink served gets a sticker before it reaches the guest. The action takes about 5 seconds. Brief your staff in advance on the gesture and the message to communicate: "Your drink is closed: the straw goes through the pre-cut opening."
Order in volume for an optimal per-sticker cost. ClearCup offers B2B volume pricing — contact info@clearcup.ch for a quote tailored to your volume.
At a festival
Two distribution options: at the bar (sticker applied at service) or at the entrance (kit distributed at check-in with the program or wristband). The second option increases the visibility of your prevention commitment and can be highlighted in your communications.
For festivals in Switzerland, ClearCup handles large-scale orders. Plan your order 4 to 6 weeks before the event.
Communicating your commitment
Don't make drink protection a taboo or anxiety-inducing topic in your communications. Frame it positively: "At our venue, every drink is closed: one more precaution." Use your social media, in-venue signage and newsletters to promote this commitment. It's a genuine differentiator — it deserves to be communicated.
Practical questions about drink protection
Does the ClearCup sticker work on all glass types?
On glasses and cups, including reusable festival cups, with an opening up to 10 cm in diameter. The rim must be dry when applied. ClearCup also works with fizzy drinks.
Does ClearCup detect drugs?
No. ClearCup detects nothing: it prevents a substance from being added once the glass is closed. It does not protect a drink that was contaminated before the sticker was applied.
Do I need a straw?
Yes. The current version of ClearCup is drunk with a straw, which goes through the sticker's pre-cut opening.
Can the sticker be peeled off and reapplied?
No. The sticker tears if it is peeled off, leaving a visible trace. A glass with a damaged sticker should not be drunk.
Is drink protection legally required in Switzerland?
There is currently no explicit legal obligation for glass protection in Switzerland. However, professional nightlife associations recommend these measures, and implementing them demonstrates due diligence on the part of the establishment.
What is the cost per protected drink?
Cost depends on order volume. ClearCup offers a B2B pricing schedule with volume discounts. Contact info@clearcup.ch for a personalized quote.