The Centers for Disease Control and Prevention (CDC) recommends, and many state dental boards require, disposable impervious barriers, such as such as plastic wrap, foil, bags, or other moisture-impervious materials, to be used on clinical contact surfaces and equipment that may be difficult to clean. At a minimum, the barriers must be changed between patients.
Additionally, all clinical contact surfaces that are not protected by impervious barriers must be cleaned and then disinfected using a hospital disinfectant registered with the Environmental Protection Agency (EPA) and labeled as effective against HIV/HBV or TB. Keep in mind that unless the disinfectant is labeled as a cleaner, then it cannot be used to clean first.
 EPA currently defines hospital-level disinfectant as a broad-spectrum disinfectant with demonstrated acceptable efficacy against Staphylococcus aureus and Pseudomonas aeruginosa.
 Note that in California, all pesticides, including surface disinfectants, must be registered and approved for use by both Federal EPA and Cal/EPA.