The best cockroach treatment NZ homeowners can utilize depends on the specific nature of the infestation. Generally, cockroach gel baits are superior for eradicating established colonies of German cockroaches due to their ability to trigger a lethal cascade effect within the nest. Conversely, residual sprays are most effective as perimeter barriers to stop Gisborne and American cockroaches from entering the property. For severe Kitchen Roach Infestations, a hybrid approach is mandatory.
