Which of the following statements about stickers is true?

Stickers are additives that enhance the effectiveness of pesticide applications. Their primary function is to increase the adherence of the pesticide to the target surface, which can significantly improve the performance of the pesticide by ensuring that it remains in contact with the treated area for a longer period. This adhesion helps prevent wash-off from rain or irrigation and improves the pesticide's ability to penetrate plant surfaces, leading to better pest control outcomes.

When used properly, stickers can enhance the action of the main pesticide ingredients, facilitating better coverage and potentially reducing the amount of pesticide needed. By improving the effectiveness of the spray, stickers contribute to more efficient pest management and can lead to reduced environmental impact due to lowered pesticide usage.

While the other choices touch on important aspects of pesticide application, they do not accurately represent the essential role of stickers in enhancing performance. For example, the notion that they only serve to increase visibility during application overlooks their critical function in improving pesticide adherence and efficacy. Furthermore, stickers are used across various formulations, not just liquid ones, and they are a helpful tool, rather than an unnecessary addition, for effective pest control.