Back in 2022, a Swedish startup called Corvid Cleaning made headlines by launching a pilot program in the city of Södertälje involving an operant conditioning device in the city's public realm. The machine allowed crows — which, it turns out, are pretty smart and social animals — to deposit discarded cigarette butts in exchange for food.

The machine itself would scan whatever the crows brought in, and if it was, in fact, a dirty butt, the machine automatically dispensed a small piece of food, such as a peanut. And because crows are social animals, the thinking was that they would then run and tell their friends, "Hey, I found us a great dinner spot!"

It's an alluring and unexpected concept. The hope was to slash the city's annual cleaning bill by getting the crows to do our dirty work. And that's why this "new pilot" seems to go viral periodically. But the reality is that Corvid Cleaning filed for bankruptcy in 2025 and, as far as I'm aware, this has in no way taken off as a viable solution for keeping our streets free of cigarettes.

The obvious problem is that cigarette butts are highly toxic, and so encouraging animals to transport them around is a suboptimal solution. Supposedly, crows are also a little too smart, and they started to try to game the system. Regardless, the prototype is dead. If only more of us could be like the Japanese, and not throw our garbage on the street.

Cover photo by Fatemeh Heidari