Which method is most effective for adult flies?

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

Answer: (B)

When targeting adult flies, getting insecticide into the air where they fly is the most effective approach. Space treatment delivers fine droplets into the room so flying adults encounter the chemical in flight, leading to rapid knockdown and a quick drop in the active adult population. Flies are mobile and spend much of their time airborne, so treating the air space directly hits them where they are most likely to be encountered.

Crack and crevice work is designed for pests that hide in cracks and crevices and are usually crawling; it’s not efficient for flying insects. Broad or general surface applications spread product over surfaces but don’t reach moving adults effectively, which makes them less reliable for rapid control of flying flies. Space treatments, used properly and with appropriate safety precautions, provide the quickest impact on adult flies.