When should a nozzle tip be replaced?

A nozzle tip should be replaced when it distorts the spray pattern because a consistent and accurate spray pattern is crucial for effective pesticide application. If the spray pattern is uneven or irregular, it can lead to inadequate coverage of the target area, which diminishes the efficacy of the pesticide and may result in pest survival.

Distorted spray patterns can occur due to wear, clogging, or damage to the nozzle. By ensuring that nozzles are functioning correctly, applicators can promote the optimal performance of the pesticide, reduce waste, and minimize the risk of environmental harm.

The other options do not directly affect the performance of the nozzle in the same way. For instance, a shiny appearance may indicate a new nozzle or one that has been cleaned, and while a faded color may signify age, these factors do not necessarily impact the functionality of the spray. Difficulty in holding a nozzle is subjective and not indicative of its performance in application. Thus, replacing nozzles that distort the spray pattern is a critical maintenance practice for effective pest management.