In this lesson for 9th-grade students, the focus is on housekeeping practices and their importance in maintaining cleanliness and organization in stores and workplaces. The lesson discusses the consequences of poor housekeeping, particularly the issue of pest infestations, which can include various insects and rodents that thrive in unsanitary conditions. Students will learn about the different types of pests and the health risks they pose to humans, emphasizing the necessity of effective housekeeping to prevent these infestations and protect both products and health. The lesson aims to equip students with the knowledge to identify and prevent such consequences in their own environments.