Choose your answer before opening the explanation. This is a learning exercise, not a competency assessment.
Second flush, 8 sciarid adults in the trap this week. Action?
- Above threshold, act now
- Below 20 per trap per week; keep counting, tighten screens
- Flies stop mattering now
- Change the compost
See the answer and why
Below 20 per trap per week; keep counting, tighten screens The published trigger from the second flush is more than 20 per trap per week.

