The archive · Product Ideas · Product decision · 2026
Sea Cleaners and JCDecaux sell brands their own litter as reverse media
Branded litter measured as negative outdoor ads — Heineken, Export and Monteith's now pay Sea Cleaners to take their worst 'billboards' down.
Sea Cleaners · JCDecaux
What it had to solve
Every discarded bottle, can or wrapper is an unintended brand impression, and research published in the Journal of Business Research found consumers would pay 2% less for a product after seeing that brand as litter. A Nielsen study across 124 New Zealand coastal destinations found 17.2% of 1,026 people could still recall specific brands seen as litter a week after visiting.
How it works
When a bottle or wrapper bearing a brand name ends up on a beach, the brand keeps getting 'seen' — but in the worst possible light. Research published in the Journal of Business Research found people would pay 2% less for products after seeing that brand as litter, and Nielsen data from 124 New Zealand coastal destinations showed 17.2% of people could recall specific brands seen as litter days later.
In April 2026, ocean-conservation group Sea Cleaners and out-of-home media owner JCDecaux launched Reverse Media Schedules with Dentsu Creative Aotearoa, Carat, Nielsen and Finch. The product treats branded litter as unplanned advertising: litter audits, audience data and media modelling identify where each brand's waste appears, how visible it is and what removing it is worth, then sell that removal back to the brand as a media schedule.
New Zealand brands Heineken, Export and Monteith's signed on first, funding Sea Cleaners' fleet of ten boats, which has lifted more than 21 million litres of rubbish from the country's beaches and waterways over 23 years. The initiative won a Silver Lion in Creative B2B and a Dan Wieden Titanium shortlist at Cannes Lions 2026, positioning cleanup as measurable brand investment with a path to global scale.
Why it lands
- Advertisers spend fortunes buying good impressions, so attaching a price to their negative ones spoke the industry's own language.
- Data made the pitch credible: Nielsen's coastal research quantified recall and reputational damage instead of relying on guilt.
- Framing removal as media investment gave brands budget lines, dashboards and benchmarks — mechanisms marketing already trusts.
- JCDecaux's participation turned a waste problem into an out-of-home inventory problem its own clients could fix.
What it did
Cleanup became a media investment rather than a donation, giving brands dashboards that show the impressions removed. The product won a Silver Lion in Creative B2B and was one of only 18 campaigns shortlisted for the Dan Wieden Titanium Lion at Cannes Lions 2026, with expansion into Australia already planned.
What you can take
Price the externality like media: once litter is measured as negative impressions with a cost, removal stops being charity and becomes a rational media buy brands understand.
Since then
Reverse Media Schedules became one of the most talked-about New Zealand ideas of the 2026 awards season, drawing a Silver Lion in Creative B2B and a Titanium shortlist at Cannes Lions as well as nominations in Targeting and Engagement and Creative Strategy. Its partners said the model could scale internationally, with Australia named as the first expansion market, turning a coastal clean-up charity into a supplier of measurable environmental media.
Sources
- Sea Cleaners + JCDecaux pull the 'world's worst outdoor ads' from rotation via Dentsu Creative
- Sea Cleaners, JCDecaux target litter as brand risk
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