The company is urging customers not to eat the cheese because it could contain listeria, which can cause serious and sometimes fatal infections in certain people.

Two lots of cheese curds have been recalled from Trader Joe’s stores after random sample testing turned up listeria in some finished product. Manufacturer Face Rock Creamery’s recall notice said the Oregon company did the testing itself on its Vampire Slayer Garlic Cheddar Curds.

Trader Joe’s is recalling a batch of garlic cheddar cheese curds after routine testing revealed possible listeria contamination. No illnesses have been reported, but customers are urged not to eat the product.