What is one key step to take to restrict access to pesticides?

Posting warning signs is an essential step to restrict access to pesticides because it clearly communicates the presence of hazardous materials and alerts individuals to the potential dangers. Warning signs serve as a strategic deterrent, helping to inform both employees and bystanders about the risks associated with pesticides. This proactive measure reinforces safety protocols, reminding people to exercise caution and stay away from areas where pesticides are stored or applied.

In addition, warning signs can specify safety instructions or require individuals to wear protective equipment if they must enter the area, thereby emphasizing the risks involved. Such measures contribute to an overall safety culture within a facility and help prevent accidental exposure or misuse of pesticides.

The other options, while they may have their own merits in different contexts, do not effectively restrict access to pesticides. Keeping the area well-lit can enhance safety but does not prevent unauthorized access. Leaving the area unlocked when not in use directly contradicts the goal of restricting access, and allowing unrestricted access for employees poses significant risks to health and safety, undermining the purpose of proper pesticide handling and storage.