Who Gives A Crap, an eco-friendly toilet paper and bathroom brand, learns more about their customers through a post-purchase quiz in their checkout. 

Once a customer has checked out, they offer an optional quiz with a series of questions to learn more about the customer. They ask customers feedback about why they chose the company and their products including a mix of answers about their product quality and their eco-mission.

They also collect personal information about the customer such as their birthday, how many people live in their household, and if they have children. 

To better understand who customers are purchasing instead of them, they ask what toilet paper alternative brands their customers use. 

To keep the humor that exists in the rest of their brand, they end the quiz with a question about if customers fold or scrunch their toilet paper before use.