Which method is most effective for cockroaches?

• A. Broadcast
• B. Space
• C. Crack & crevice
• D. General

Answer: (A)

The main idea here is choosing the application method that maximizes contact with cockroaches and provides lasting control. Cockroaches hide in many hidden corners and move through walls, cabinets, and along baseboards. A broad-area (“broadcast”) treatment places insecticide over a wide swath of floor surfaces and accessible harborage routes, so roaches encounter the product as they travel and forage. This method increases immediate contact and often offers a longer-lasting residual effect, reducing reinfestation as the population persists or recovers.

Space treatments target the open air and have limited residual value, so they’re less effective for maintaining control over time. Crack-and-crevice treatments focus on tight gaps where some roaches hide, but many roaches reside in open areas and along routes not confined to cracks, so relying on crevices alone can miss a substantial portion of the population. A general or vague application lacks the coverage needed to reach all harborage sites. Therefore, broad-area broadcasting provides the best overall chance of reducing the cockroach population effectively.