During a routine check the manager finds gnaw marks on a flour bag, greasy rub marks along a wall, and small dark droppings. What is the best response?

解析

Gnaw marks, greasy rub marks, and droppings are classic signs of a rodent infestation. The manager should throw out any food that may be contaminated, clean and sanitize affected areas, and bring in a licensed pest control operator to identify the entry points and treat the problem. Wiping away the evidence removes the signs but not the rodents, waiting a month lets the population grow, and putting food out feeds the infestation instead of denying it food.