Answer:
Because of the nature of the items
Step-by-step explanation:
It seems illogical to conclude that the government would able to accurately track down deadly meat out of a pool of several tons of processed meat.
However, to determine defective toys or other non-meat products from stores would require little technical issues, whereas to examine meatpacking companies may require gathering expert dieticians to determine what meat should be categorized as "deadly meat", etc.