Which factors should you base the selection of insecticides on?

• A. The site
• B. The species
• C. The impact on the environment
• D. All of the above

Answer: (D)

Choosing an insecticide involves matching the product to where you plan to use it, the pest you’re targeting, and how it might affect the environment. The site matters because outdoor landscapes, greenhouses, homes, or near water have different label requirements, restrictions, and potential exposure risks, which also influence how you apply the product and how long residues linger. The pest species is crucial because insecticides vary in their efficacy and mode of action; some products are targeted to specific pests while others affect a broad range, and using the right product helps ensure control and reduces the chance of resistance. The environmental impact matters because you want to protect non-target organisms like beneficial insects, pollinators, aquatic life, and soil health, and because labels include safeguards to minimize harm to the environment. Taken together, you choose an insecticide that is labeled for your site, proven effective against your pest, and aligned with environmental safety.