When should you kill turf insect pests?

• A. Immediately at first sign of any pest.
• B. Not until they surpass the threshold level.
• C. Only after significant turf damage occurs.
• D. After the first mowing.

Answer: (B)

The key idea is using an action threshold: you monitor turf insect pests and only apply control when their numbers reach a level that could cause economic damage. Acting at the first sign is usually unnecessary and wastes money, can hurt beneficial insects, and may promote resistance. By waiting until the pest population or damage is at or above the threshold, you protect turf quality while keeping inputs in check. Thresholds are pest- and situation-specific, so regular scouting and correct timing are essential, and when you do treat, use targeted, label-approved products.