Place the leaking package in an appropriate box. Seal the box. Place the sealed box in a plastic bag and seal the bag. Place the entire package in an outer carton for return to sender. Flood affected surfaces and rinse rubber gloves with household chlorine bleach, diluted 1 ounce to 1 gallon of water, and let stand for 5 minutes.
Chlorine bleach is a mildly corrosive oxidizer.
Wipe dry with an absorbent material, place absorbent material in a plastic bag, and incinerate. Never dispose of etiologic agents in the trash. 363 General Packaging and Marking Requirements 363.1 Etiologic Agents 363.11 General . Any item that contains or may contain an etiologic agent must be prepared for mailing as described in this section. 363.12 Mailability .