Which statement is true about dust pesticides?

Dust pesticides are often favored for their ability to remain effective over extended periods after application. Unlike some other forms of pesticide, which may lose efficacy more quickly due to environmental factors like moisture or sunlight, dust formulations can adhere to surfaces and resist degradation, allowing them to provide ongoing pest control. This longevity makes them particularly useful in certain environments where sustained action is necessary.

The other choices illustrate misunderstandings about dust pesticides. For instance, stating that they are ineffective after application undermines their design and purpose, which is to continue working over time. The idea that they can be classified as typically liquid contradicts the nature of dust formulations, which are dry and not liquid in consistency. Finally, applying them in high volumes is not a standard practice; dust pesticides need to be used judiciously to avoid oversaturation and potential harm to non-target organisms or the environment.