Cleaning up a basement after a raw sewage backup requires rigorous biohazard protocols to protect your health. First, extract all standing water using a heavy-duty wet/dry vacuum or pump, discard ruined porous materials like carpeting and drywall, and wear heavy protective gear including rubber boots and an N95 respirator mask. Scrub all hard non-porous surfaces, such as concrete floors and metal framing, using a strong solution of household chlorine bleach mixed with water (one cup of bleach per gallon) or an EPA-registered hospital-grade disinfectant. Verification: Run industrial dehumidifiers continuously for 48 to 72 hours to dry out the structural framing and prevent mold growth.
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