What is the intended function of respirators in pest control?

The primary function of respirators in pest control is to filter inhaled air to remove harmful substances, specifically liquid and solid particles. Pest control often involves the use of chemicals and pesticides that can release toxins or irritating particles into the air. By utilizing respirators equipped with appropriate filters, pest control professionals can significantly reduce their exposure to these hazardous materials, ensuring a safer working environment.

The other options do not accurately reflect the role of respirators. For instance, while the goal of some equipment is to provide warmth, that is not the intended purpose of respirators. Similarly, respirators do not inherently protect against chemical spills, as their primary function is air filtration rather than liquid containment or management. Lastly, although some situations may require the supply of oxygen in confined areas, standard respirators are not designed for that function; specialized equipment is necessary for oxygen provision in those scenarios. The focus on air filtration makes the first choice the correct answer in the context of pest control.