What characteristic of Demand CS makes it effective as a contact pesticide?

Demand CS is effective as a contact pesticide primarily due to its long residual action. This characteristic means that once applied, it continues to be active on surfaces for an extended period, allowing it to effectively target and control pests that come into contact with treated areas. The long residual action ensures that even after the initial application, the active ingredients remain effective against various pests, providing ongoing protection and reducing the frequency of reapplication needed.

In contrast, while rapid absorption can play a role in the effectiveness of some pesticides, it is the sustained presence of the active ingredient in the environment that significantly contributes to prolonged pest control. Similarly, the ability to penetrate surfaces or specific formulations, like gels, may aid in certain scenarios, but it is the long-lasting residual activity that firmly establishes Demand CS as a reliable contact pesticide in pest management.