Taipei Health Department workers went several times to the places indicated on a list provided by Wang to determine whether illicit foodstuffs had come in, but their investigations showed that many of the eateries did not exist or had gone out of business long ago. The restaurants that could be found posed no cause for suspicion as their food sources could all be traced.
北市衛生局針對王育誠提供的餐廳名單多次前往稽查是否有非法食材流入，但探訪結果，不是查無店家，就是早已歇業，至於被找到的業者，食材來源都可追溯，毫無可疑之處。