Researchers develop self-contained micro- and nanorobots with antimicrobial activity, capable of attacking bacteria in the site of infection. The work has been led by Samuel Sánchez (Institute for Bioengineering of Catalunya (IBEC) and Cesar de la Fuente-Núñez (University of Pennsylvania, USA). The new technology, tested in mice, is a valuable tool for the treatment of bacterial infections in a controlled and localized way. In a future not so far, it could help combat infections.