Infections caused by Staphylococcus aureus and Staphylococcus epidermidis still play a major role in human and animal disease. In particular staphylococcal biofilms on indwelling devices are difficult to treat due to their inherent antibiotic resistance (5, 7, 26). In this context, it is important to develop alternative treatment strategies to combat staphylococcal infections, particularly in v...