Which of the following measures helps maintain sanitation and prevent pest infestation?

Regularly cleaning surfaces is a crucial measure that helps maintain sanitation and prevent pest infestation. When surfaces are kept clean, food residues, spills, and crumbs that might attract pests are eliminated. This not only reduces the likelihood of attracting insects and rodents but also maintains a hygienic environment that is essential for food safety.

Other choices pose risks to sanitation and pest control. Leaving doors open for ventilation can allow pests easy access to the premises. Storing food in open containers can expose it to contamination and pest access, thereby increasing the risk of infestations. Using outdated cleaning products may result in ineffective sanitation, failing to thoroughly clean surfaces and thus not providing the necessary protection against pests.