one busy afternoon, Kit, a barista, received a call from a customer. The customer complained that his drink had a hard, round, white piece of plastic. The customer was mad because he had almost finished the iced coffee before noticing the plastic. Kit apologized profusely and gave the customer a refund plus a voucher for his next visit. Kit investigated what happened to ensure that this will would not happen again. Upon looking at the plastic contaminant, Kit realized that it was the cap for a milk carton. Looking at how the bar is arranged, the garbage bin is located next to the ice chest. Both the ice chest and bin don't have lids. It was also a hectic afternoon, so the garbage bin overflowed. How would you categorize the contaminant, and what would you recommend to ensure that this incident never happens again?
