What environmental factor significantly affects the lifespan of Methoprene briquettes?

The lifespan of Methoprene briquettes is significantly influenced by temperature variations. This is because the effectiveness and degradation rate of Methoprene, a juvenile hormone analog used in mosquito control, is strongly dependent on environmental temperatures. Higher temperatures can accelerate the breakdown of Methoprene, reducing its efficacy over time. Conversely, lower temperatures may prolong its lifespan but can also affect its performance in controlling mosquito populations.

While other environmental factors such as humidity levels and sunlight exposure do have an impact, temperature plays a more central role in determining how long Methoprene briquettes remain effective in the field. Sunlight exposure, for example, can lead to photodegradation, but temperature is a more overarching factor that affects the entire chemical structure and functionality of the briquettes. Water salinity is less relevant in this context as it does not directly influence the chemical stability of Methoprene used in briquettes.