When must you always wear a respirator during pesticide application?

Wearing a respirator during pesticide application is crucial when mandated by the pesticide label or California's regulations. This requirement is in place to protect applicators from inhaling harmful chemicals, which can cause respiratory issues and other health problems. Pesticide labels contain specific safety instructions that indicate when personal protective equipment, including respirators, is necessary based on the toxicity of the pesticide being used and the exposure risk. California's stringent rules further emphasize the importance of adhering to these safety standards, reinforcing the need for a respirator in situations where inhalation risks are significant.

While factors like sunny conditions, the mixing of pesticides, or the amount being handled can influence safety practices, they do not override the fundamental requirement established by regulatory guidelines and pesticide labeling. Thus, following the label instructions and state regulations is vital for ensuring safety during pesticide applications.