Which of the following is NOT a method for maintaining proper sanitation?

The choice of using non-food grade containers for storage is the correct answer because it contradicts the principles of maintaining proper sanitation. Food-grade containers are specifically designed to safely hold food products without posing a risk of contaminating the food with harmful substances. Non-food grade containers may leach chemicals or have residues that could compromise food safety, leading to foodborne illnesses or other health hazards.

In contrast, regular hand washing is essential for preventing the spread of germs and ensuring personal hygiene. Proper waste disposal helps in managing waste in a sanitary manner, thereby reducing the risk of pest infestations and contamination. Routine equipment cleaning aids in eliminating dirt and pathogens, thereby keeping the environment safe and sanitary for food preparation and service. Together, these practices support a safe food-handling environment, while using non-food grade containers would not contribute to those sanitation goals.