Page "Roach bait" Paragraph 4

Cockroaches eat the feces of other roaches and they feed on each other.

After consuming a lethal dose of a residual bait insecticide known to have delayed toxicant activity, cockroaches return to the harborage where they excrete feces.

The insecticide-laden feces, fluids and eventual carcass, can contain sufficient residual pesticide to kill others in the same nesting site.

As the roach staggers around for hours or even days, it infects other roaches in the nest, with toxicant transfer through feces, which then go on to infect others.

This secondary transmission occurs through direct contact with, or ingestion of, traces of baits dispersed in the environment by contaminated cockroaches.

These traces were either deposited by “ trampling ” in the environment or on dead contaminated cockroaches.