Pyriproxyfen is an active ingredient in the new Insect Fogger and works as an insect growth regulator. Instead of killing adult cockroaches immediately, it prevents immature stages from developing into reproductive adults, leading to long-term control.
Control can take up to 2 months to become noticeable. Pyriproxyfen has a longer residual effect than typical insecticides, continuing to prevent cockroach populations after the initial application.