Chinch bug damage can occur between late May and mid-October, depending on soil temperature. There may be up to 3 generations of chinch bugs in one season. Treat with Grub and Insect Control or Organic Insect Control. If you have early chinch bug infestation and have treated with insect control, you still need to monitor closely. The insect control may not kill 100% of the insects and they may still cause damage if another generation occurs. If you have a history of chinch bug damage, apply Grub and Insect Control the following year also to keep the population low enough to not do damage.
Some indications of chinch bugs are:
- Unusual bird activity on the lawn
- Greyish color damage and a contiguous damage pattern.
- “The coffee can test”
- Remove both ends of a large tin can, such as a coffee can.
- Insert one end of the can into the ground at the very edge of the damage so what is visible in the can is half damaged and half not.
- Press the can two inches into the soil, leaving about least four inches above the ground.
- Fill the can with water and wait about five minutes.
- If chinch bugs are present, they will float to the surface of the water.