Brian from Cincinnati Ohio writes
Basically does the product work as a boundary. When it dries and bugs cross through the dried product does it still kill or is this product just for on contact kill.
Per the manufacturer the Zenprox EC works bests as a contact kill but will continue to kill insects on nonporous surfaces for about 3-4 days after initial application and 4 days on porous surfaces.
Answer last updated on: 10/01/2013
