Recently disclosed violations included meat and fat residue left on walls, green mold, and 'general filth' in several of the food company's plants over a six-year period.

Inspectors found "general filth," poor sanitation practices, and structural issues at Boar’s Head facilities, including the Virginia plant linked to a deadly Listeria outbreak that killed 10 people and hospitalized 60,

Poor sanitation at Virginia Boar's Head plant caused a deadly listeria outbreak that killed 10 and sickened 61 last summer.

Sixty people were hospitalized and 10 are known to have died last year in the largest listeria outbreak since 2011.

According to a press release, a thorough review found multiple violations of food safety protocols — including the presence of mold, insects, and other unsanitary conditions — in the site of the outbreak at a Boar Head’s plant in Virginia to be the main cause of the outbreak.

A report released by the Department of Agriculture found that poor sanitation practices at a Boar's Head facility in Virginia contributed to the largest listeria outbreak since 2011.

The USDA said inspectors found product residue in the form of meat and fat from the equipment left over from the previous day.

Problems documented at three factories echo violations found at the Jarratt, Virginia, plant linked to the food poisoning outbreak.