We follow the standard Cockroach control » procedure for terminating their population but more frequent service may be required because of their rapid reproductive rate. At least 95% of the population is eliminated in the first round. If this doesn’t happen then it means that our typical maintenance program has failed leading us to use more rigorous combative measures. For effective termination, placement of cockroach killing substances along junctions and/or in cracks and crevices in or near harborages is essential.