Release belongs to the investigating agency and, where a death is involved, the county medical examiner. Their work is investigation and removal, and it has to finish completely before anyone else enters to clean, both for the integrity of their work and for everyone's safety. The practical move during the wait is not idleness: open the insurance claim, ask the coverage question, and book the cleanup assessment so it begins at release. Families who make those two calls during the wait lose no time at all; the cleanup starts the hour the scene is theirs again.
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Purgatory Creek Biohazard Cleanup is a free referral service. Submitting this form connects you with independent local contractors who provide the work.