Haelixa is a young ETH spin-off that aims to commercialise robust DNA-based tracers for tracking fluids and solids. Currently, Haelixa occupies offices and laboratories in the Innovation & Entrepreneurship Lab (ieLab) at ETH Zurich. The ieLab acts as an incubator for start-ups, a place where ideas can mature and be made marketable. Spin-off founder Michela Puddu is happy to have this support, as there are enough other challenges involved in setting up a company. In our third podcast episode, she and her colleague Punit Mehra talk about these challenges.