Depending on the policy and the cause of the biohazard, homeowners insurance may cover biohazard cleanup. Coverage is more likely if the biohazard results from a covered peril, such as accidental death or a crime. However, standard policies often do not include coverage for damages due to intentional acts or neglect. It's important to review your insurance policy or consult with your insurance company to understand the specific coverage and any exclusions in your policy related to biohazard cleanup.