How do you know if a respirator is necessary?

A respirator is necessary when the pesticide label specifically states so because the label is designed to provide critical safety information based on the toxicity and the nature of the chemical involved. Pesticide labels are created with regulatory oversight and contain instructions that ensure the applicator's safety. Therefore, if the label indicates that a respirator is required, it is essential to adhere strictly to that guidance to protect oneself from potentially harmful exposure.

While strong odors and feeling lightheaded can indicate that there are airborne contaminants present, they are not reliable indicators on their own, as odors can sometimes be misleading and lightheadedness can result from a variety of factors unrelated to pesticide exposure. Relying solely on these sensations may put an applicator at risk, whereas following the pesticide label ensures compliance with established safety protocols designed for worker health and safety.