How long do Methoprene briquettes typically last in the water for controlling mosquitoes?

Methoprene briquettes are designed to provide long-lasting control of mosquito populations. When these briquettes are placed in water, they release the active ingredient methoprene, which acts as a larvicide by interfering with the development of mosquito larvae. The effectiveness of these briquettes can last up to 150 days in water, making this option the most appropriate choice. This extended duration ensures that the treatment remains effective over a significant period, reducing the need for frequent reapplication and helping to manage mosquito populations more effectively.

Other options suggest shorter durations, which may not provide the same level of control and would require more frequent applications, leading to increased labor and material costs for mosquito management efforts.