Which method is most effective for cockroaches?

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

Answer: (A)

Cockroaches spend most of their time in cracks, crevices, behind appliances, and along baseboards, where they have shelter and routes to travel. Treating those hiding places with a residual product—placing the pesticide directly into cracks and crevices—delivers contact with roaches where they live and leaves a lasting control layer. This targeted approach reaches the pests despite their preference for concealment and is less likely to be evaded or washed away than a broad, surface spray. Broad or general surface applications may kill some individuals on contact, but roaches tend to avoid open spaces, and the residue on exposed areas often isn’t as effective or long-lasting. Space sprays provide quick knockdown but little residual control, so they don’t address the pests over time. Therefore, focusing on cracks and crevices yields the most effective, durable control when combined with good sanitation and baiting.