“Lids themselves were never cleaned, just left on the assumption they were fine,” Woodburn-Simmons said. When the morning rush hit, the wipe-downs lapsed too. “Wiping down the area became an only-when-absolutely-necessary job,” he said, which on a bad morning meant “three to four hours.” He still remembers the puddles of spilled milky coffee left to spoil and people setting their lids down in them.
Article source: https://www.huffingtonpost.co.uk/entry/gross-things-coffee-shops_uk_6a62154be4b077d95ae8acc5