As growers are getting their spinach back on the market, federal investigators will try to capture wild pigs and test them for the E. coli strain that killed one person and sickened dozens of others across the country in the national spinach-related outbreak.

Several farms implicated in the E. coli outbreak also have cows on them and that E. coli samples taken from the fields have been connected to the cattle, but it is unknown if it’s the same strain that’s responsible for the outbreak.

It has been four days since the ban on local spinach was lifted, but demand for the product is still low. Lawmakers are discussing a possible marketing campaign with growers and shippers in an effort to regain consumer confidence.