What is the primary concern about having pests in a restaurant?

The primary concern about having pests in a restaurant is that they spread disease. Pests such as rodents, flies, and cockroaches can carry harmful pathogens that can contaminate food and surfaces within the establishment. This poses significant health risks to customers and staff, as foodborne illnesses can result from consuming contaminated food. Restaurants must maintain strict sanitation and pest control measures to ensure a safe dining environment and protect public health.

While the other aspects mentioned, such as damaging equipment, being unsightly, and consuming food supplies, are valid concerns, they do not carry the same level of immediate health risk associated with the spread of disease. Food safety is paramount in restaurant operations, and the presence of pests directly challenges this safety, making disease transmission a primary concern.