According to the FDA, food debris was found on equipment supposedly fully cleaned at the Taylor Farms food production facility in Colorado that supplied slivered onions used at McDonald's. Investigators also discovered workers were only using proper hand sanitization processes sometimes.

The FDA discovered infrequent handwashing and dirty equipment were the culprits of the deadly E.coli outbreak that impacted a McDonald's supplier. According to reports, the FDA found food sanitation procedure violations at Taylor Farms' food production facility in Colorado.