Why offer a discount? Can't we just ask customers to drop off their products?
You can — and uptake will remain limited. Our research and pilot data consistently show that a reward is essential for driving participation at scale. Without it, take-back remains a passive compliance exercise with low engagement. The reward turns a disposal moment into a relationship moment.
Doesn't offering a discount make it feel transactional?
It depends on the order. Our research on in-store messaging found that purpose must come before payoff. If the first thing a customer sees is "get 10% off," the interaction feels like a coupon grab. If the first thing they see is "give your shoes a second life" — and the reward follows — the dynamic is fundamentally different. The customer is doing something meaningful, and the brand is thanking them for it. That creates loyalty, not just a transaction.
Does rewarding customers undermine the motivation to participate?
Sometimes, depending on how the reward is framed. Cash payments for a behaviour people might otherwise do for non-financial reasons can crowd out the original motivation. In-store credit and brand-aligned incentives tend not to.
Read the longer explanation →
What type of reward works best?
Depends on the product category and the audience. Self-benefitting rewards (discounts) compete with the moral motivation; other-benefitting rewards (a donation to a cause) tend to preserve it; mixed designs perform well in practice.
Read the deep-dive on reward design →
Does culture affect which incentive approach works?
Significantly. A
cross-country study comparing Germany, the United States, and China found different optimal strategies in each market. In Germany, environmental appeals alone were strongest. In the US, rewards drove participation primarily through extrinsic motivation. In China, rewards tied to environmental purpose were most effective. The researchers concluded that environmental purpose can neutralise the negative effects of extrinsic incentives under certain conditions. Programmes operating across multiple markets need to adapt messaging and incentive design rather than applying a single template.
Source: Yang, X. & Thogersen, J. "When People Are Green and Greedy," J. Business Research, 144, 2022.
How does resale fit into this picture?
Resale sits on the same behavioural continuum as take-back. Resale platforms have demonstrated that people will invest significant effort in returning products to circulation — photographing, listing, packaging, posting — when there is something in it for them. But the moment the item has no resale value, the behaviour disappears. The jacket that would fetch 30 euros gets listed. The worn-out shoes that would fetch nothing go in the bin. Resale is the high-payoff end of the continuum. Donation to a textile bank is the low-payoff, high-purpose end. In-store take-back sits in the middle. When the item no longer has resale value, purpose is the only thing sustaining the return behaviour — and purpose alone, without any payoff, has a ceiling.
Does a customer need to participate on the day they see the programme?
No. One of the most underappreciated dynamics in take-back programme design is delayed activation. A customer visits the store, sees the programme, but does not have their old items with them. They do not participate that day. But the awareness has been planted. The next time they are packing the car for a shopping trip, the programme catches. The shoes go in the boot. The discount that seemed irrelevant last visit becomes the reason they made it off the shelf by the front door. Purpose before payoff is not only about the customer at the collection point right now. It is about building the awareness that activates on the visit where participation becomes possible. Social proof reinforces this across visits: each encounter with a counter, the signage, the sense that other customers participate here, is a deposit in awareness.
What role does social proof play?
Social proof is one of the most reliable drivers of sustained participation. A
study of recycling behaviour in New York apartment buildings found that comparative feedback (how your building's recycling compares to neighbours) drove stronger behaviour change than self-referencing data alone. In store, this translates to visible counters ("1,247 items collected at this location"), community statistics ("Join thousands of customers"), and real-time feedback. Social proof creates a nudge for future visits: a customer who sees a counter today may not participate today, but the expectation of participation is established for next time.
Sources: ScienceDirect, "Keeping Up With My Neighbors" (2023). Zhu, Circular Economy and Sustainability (2026): relatedness as ~40% of intrinsic motivation.
Why does the customer need to scan the product? Can't they just drop it off?
Drop-off gives you a bag of products and a weight figure. Scanning gives you product-level data: brand, model, category, condition. This is what transforms take-back from a logistics operation into an intelligence platform. The scan is what makes the email valuable — it's not just "someone signed up," it's "someone who owns Nike Air Max 90s in worn condition visited your Rotterdam store and is ready for a replacement." That's a categorically different data asset. The scan is also the behavioural moment where
Self-Determination Theory applies: competence (the customer learns their effort matters) and relatedness (they see themselves as part of a larger system) are both activated at the point of engagement, not at the point of disposal.
What does the customer gain from scanning?
Three things. First, they receive a personalised discount for their next purchase. Second, they can track what happens to their product — where it goes, how it's processed, what circular outcome is achieved. Third, they're contributing to a visible impact: total items collected, products diverted from landfill, materials recovered. The scan takes 20 seconds. The customer gets a reward, transparency, and a sense of contribution.