Case Study: How to get people to separate their organic waste?

In this guest blog, Behavioural Designer Ron Ghijssen, founder of ANDC Design shares a fascinating and very well executed intervention strategy he worked on in the Dutch City of Amersfoort. The target of the intervention was to get people to start separating their organic waste. The case demonstrates of the power of behavioural design thinking combined with creativity for designing sustainable behavioural change.


Design for Sustainable Change

The problem with separating organic waste

There is no such thing as organic waste*. As citizens, we have to consider organic waste a valuable resource. More and more public and private organizations in the Netherlands (and all over the world) carry out this message. A critical condition for organic waste getting a new, meaningful destination is that citizens separate their waste.

*Organic waste is any material that comes from a plant or animal and is biodegradable. For example leftover food, coffee grounds, apple cores, egg shells and other kinds of food byproducts. But also cut flowers, plants and pet food are welcome in the green wheelie bin.

Very often, when it comes to ‘green topics’ like this, a successful outcome depends on human behaviour. But how do you (as a government or a more decentralized municipality) stimulate citizens to separate their organic waste? What is the central message that you want to communicate? And how do you reach your target group? What are the interventions that put citizens into action? Let me tell you how we did this in Amersfoort (a municipality in the province of Utrecht with more than 150.000 inhabitants).

Amersfoort asked research agency Dijksterhuis & van Baaren and creative agency ANDC (the agency I work for) to develop a public campaign to stimulate citizens to separate their organic waste. In this way, the share of organic waste in the residual household waste can be reduced, and the organic waste can be used to produce compost and biogas.

Also, Amersfoort recently implemented the system of ‘reversed waste collection’. What this implies is that the municipality doesn’t collect residual household waste at home anymore, but citizens have to bring it to underground containers in their neighbourhood. This leads to reactance (people have a natural need for autonomy and don’t want things to be imposed). Consequently, the less residual household waste people produce every week, the less physical effort is weekly needed. So there is also a direct personal advantage for citizens of Amersfoort in lowering the amount of organic waste in household waste.

The Human Insight

The research phase (i.a. questioning a group of citizens of Amersfoort) led to several exciting insights which formed the base for the campaign strategy. The core of this strategy contained two central elements:

  • Emphasize separating organic waste is normal; it’s a common thing
  • Facilitate citizens in separating organic waste

With this strategy as an essential guideline, we focused a bit more on insights from the research phase. It triggered us that the majority of citizens consider separating waste as an annoying task because it implies effort (this applies not only to people in Amersfoort, former research shows that this applies to the majority of people in the Netherlands). 

And you know what? People are right. It’s so much easier to throw the organic waste in the ‘normal’ household trash can. For separating organic waste the right and efficient way, you need a small organic waste bin that you can place on the kitchen countertop (which people often regard as a stand in the way). People who are motivated to separate organic waste have this kind of bin. But the majority isn’t motivated enough to buy such a bin and place it consequently on their kitchen countertop. So despite the good intentions people have (which they overall really have), these elements form significant barriers to separate organic waste for most people.


The solution: Reframe the Organic Waste Bin

Wat is jouw Bakkie?We felt we were on the right track with the ‘bin issue’. By discussing this issue more deeply in brainstorms, by physically analyzing our own kitchens and by adding some common sense (where would you be without), we concluded that every kitchen has só many potential organic waste ‘bins’: a pot used during cooking, an empty little mushroom box, an empty salad bowl. In other words, simply every kitchen object where you can put organic waste in will do (I don’t recommend using a little girl’s lunchbox, my daughter didn’t appreciate it).

So we realized that asking ‘Do you have a little bin?’ wasn’t the right question. The right question was: ‘What’s your little bin?’ (in Dutch: ‘Wat is jouw bakkie?’)


Behavioural Design In Action

Bakkie CampaignThis question reframes almost every cooking object in a little organic waste bin. And it contains a facilitating message to all citizens. After all, suddenly, they see little waste bins all around them in their kitchen. And the best part is: people have freedom of choice and can pick the one they find most suitable. So we just helped people make the first step in desired behaviour by making it easy. Where’s that resistance now?

Another great advantage of this message is that people are being facilitated by this question instead of investing in tangible physical goods. After all, there was no budget to give all citizens their little bin. But why should you, when everyone has more than enough by themselves? So there was no needless time and money wasted (sorry) for getting everyone a particular organic waste bin.

Finally, the question also contains the desired social norm we wanted the campaign to express: everyone has a little bin, what’s yours? 

Campaign Execution

Furthermore, we designed and developed several interventions to stimulate the desired behaviour to reach the target group. We created visuals for an Amersfoort wide (poster) campaign. We asked citizens of Amersfoort to be our ‘models’ because we wanted the question (What’s your little bin?) the target group to ask the question themselves. 

Also, we designed a so-called ‘wheelie bin bingo’. All citizens of Amersfoort with a green wheelie bin (for organic waste) received a brochure in their postbox. This brochure contained, amongst other things, information about the importance of separating waste and tips & tricks regarding the right way to do it. But it also included a sticker upon which people had to write down their house number. By pasting their sticker on their green wheelie bin, all citizens were automatically enrolled in the periodic ‘green wheelie bingo’ (having a chance to win modest but fabulous prizes).

Again, the stickers carry out the social norm when visible on the sidewalks and serve as prompts or reminders for the desired behaviour.

The campaign launched in May 2021, and the city council will monitor the results through an annual analysis of the share of organic waste in residual household waste. One of the most critical desired outcomes is a significant decrease of the organic part in household waste. We hope that our combination of behavioural design and creativity will contribute to this vital goal.

I hope the case of Amersfoort showed you how using insights from solid research, selecting the correct behavioural design principles and techniques ánd adding some creativity can lead to a positive, appealing and hopefully effective campaign.


Ron Ghijssen is a SUE Behavioural Design Academy alumnus. He is the founder of  creative agency ANDC. As a behavioural designer, he applies behavioural design principles and techniques to societal challenges.



Make the most of summer!
We're back with training in Amsterdam

Make the most of your summer!
As of July, we’re back with the live edition of Behavioural Design Fundamentals Course

Want to learn more?

Suppose you want to learn more about how influence works. In that case, you might want to consider joining our Behavioural Design Academy, our officially accredited educational institution that already trained 2500+ people from 40+ countries in applied Behavioural Design. Or book an in-company program or workshop for your team. In our top-notch training, we teach the Behavioural Design Method© and the Influence Framework©. Two powerful frames to make behavioural change happen in practice.

You can also hire SUE to help you to bring an innovative perspective on your product, service, policy or marketing. In a Behavioural Design Sprint, we help you shape choice and desired behaviours using a mix of behavioural psychology and creativity.

You can download the Academy brochure here, contact us here or subscribe to Behavioural Design Digest at the bottom of this page. This is our weekly newsletter in which we deconstruct how influence works in work, life and society.

Or maybe, you’re just curious about SUE | Behavioural Design. Here’s where you can read our backstory.

sue behavioural design