Compression sprayers are typically used for:

Compression sprayers are particularly effective for larviciding, which involves targeting mosquito larvae in water sources where they breed. These sprayers are capable of applying pesticides in a manner that allows for the precise application of larvicides to standing water, such as ponds, marshes, or containers. The design of compression sprayers is conducive to delivering the pesticide over a larger area with sufficient pressure, ensuring that the larvicidal treatment reaches its intended targets, effectively preventing mosquito development.

The focus on larviciding aligns with mosquito management strategies that prioritize the control of populations before they reach the adult stage, which is crucial for reducing the overall mosquito population and the diseases they may spread. When comparing this method to adulticiding, which targets adult mosquitoes typically through different application techniques such as fogging or spraying from trucks, compression sprayers are not the primary tool used for that purpose.

While it is true that compression sprayers are generally legal for pesticide application in Michigan, the specificity of their use for larviciding makes option B the most appropriate choice.