There are a number of different products that can be used to kill bacteria on the skin. These include antiseptic soaps, antibacterial gels and creams, and even some essential oils. Tea tree oil, for example, is an essential oil that has been shown to be effective against a variety of bacteria. Additionally, there are a number of over-the-counter products that contain ingredients such as triclosan or alcohol which can also kill bacteria. However, it is important to remember that these products should only be used on the skin if they are absolutely necessary, as they can also cause irritation.