Detecting Lawn Insects: Dig, Float, and Soapy Water Flush Methods

Three Techniques to Reveal Hidden Pests

1. Dig Them Out (Grubs)

Japanese beetle eggs laid in lawns hatch into C-shaped white grubs eating roots. If many beetles this summer, check: shovel 2 inches under sod, flip up. >8 grubs/sq ft = treat with grub insecticide.

2. Float Them Out (Chinch Bugs)

St. Augustine grass: cut ends off gallon can, press into soil, fill with water, keep full 5 min. Chinch bugs float. Adults 1/5 inch, dark gray; nymphs smaller, reddish.

3. Wash Them Out (Sod Webworms)

Mix ¼ cup lemon dish detergent in 4 gal water. Pour over grass; insects wriggle to surface. County Extension can ID unknown insects.

MORE INFORMATION
Insect Pests of Home Lawns