What must all products labeled as sterilizers or disinfectants possess?

Products labeled as sterilizers or disinfectants must possess an EPA registration number and approved EPA label to ensure they meet regulatory standards. The registration number indicates that the product has been evaluated by the U.S. Environmental Protection Agency for its safety and effectiveness, confirming that it can effectively kill or remove harmful microorganisms in the intended use. The approved label communicates specific usage instructions, safety precautions, and claims regarding its efficacy. This regulation is crucial for consumers and professionals in ensuring they use safe and effective products for sanitization and infection control.

The other options do not address the necessary regulatory requirements for these products. Customer satisfaction guarantees, warranties for effectiveness, and universal health certifications do not have the same level of regulatory oversight and are not required for products in this category. It’s the EPA's involvement and approval that provide the necessary assurance regarding the product's reliability and safety in public health settings.