Washington Pesticide Laws and Safety Practice Test

Mechanical control methods involve physically preventing or removing pests from a certain area. This includes options such as using traps and fences to prevent or reduce infestation. Introducing natural predators or altering planting times may be considered biological or cultural control methods, respectively. Chemical pesticides, while effective in killing pests, do not involve mechanical means and can be harmful to the environment. Therefore, option C is the most appropriate answer as it specifically pertains to a mechanical control method.