Which of the following is a step to follow when spraying?

Following label instructions is critical when spraying pesticides or any other chemicals. This ensures that the application is effective while also adhering to safety guidelines set forth by the manufacturer. The label provides essential information such as the correct dosage, the recommended areas for application, and specific precautions to protect not just the person applying the product, but also beneficial organisms and nearby humans or pets.

Adhering to the label also helps in complying with legal requirements, as following these instructions is often mandated by law. Ensuring that the application is done correctly according to the label can prevent harmful consequences, such as environmental damage or health issues resulting from misuse.

Other potential choices, like spraying at night, may relate to specific situations but are not universally applicable guidelines and often depend on the pest being targeted as well as environmental conditions. Wearing sunglasses might provide some personal comfort but does not address the critical factors of safety and effectiveness as comprehensively as following the label. Spraying only indoors limits the application range and could be relevant only in certain contexts; however, it is not a mainstay of proper application practices.