Which of the following strategies is part of non-chemical control for cockroaches?

The strategy of removing food and water sources is a fundamental component of non-chemical control for cockroaches. Cockroaches are attracted to food remnants, spills, and standing water as these resources support their survival and reproduction. By eliminating these attractants, you significantly reduce the likelihood of cockroach infestations, making the environment less hospitable for them. This method is effective because it directly addresses one of the main needs of cockroaches—access to food and moisture. Ensuring that kitchens, pantries, and other spaces are clean and free of sources of sustenance can help manage and prevent future infestations without relying on chemical pesticides.

The other options listed involve chemical treatments or methods that do not align with non-chemical control strategies. Regular application of pesticides is chemical-based and directly conflicts with the idea of non-chemical control. Similarly, while insect growth regulators can help manage populations, they are considered a chemical intervention. Utilizing traps, although less invasive than pesticides, is still a method that may involve some level of chemical attractants or baits, which may not entirely classify it as a non-chemical control method. Therefore, option B is the most appropriate choice in the context of non-chemical strategies for managing cockroach populations.