Chinch Bugs, Low pH, and Lawn Recovery in Atlanta

An Atlanta homeowner with St. Augustine grass has battled chinch bugs for years. After a severe drought, 75% of the lawn is gone despite re-sodding twice. Soil pH is 5.2. The yard is full of weeds after a mild winter. The expert provides a diagnostic plan:

1. Soap flush: 2 oz dish soap in 2 gallons water over 2 sq ft to bring insects to surface. Identify chinch bug nymphs (red with white band) and other pests.
2. Check for grubs with a post hole digger to 18 inches; identify species and life cycle for proper treatment timing.
3. If insects ruled out, test for harmful nematodes via soil analysis through extension services.
4. pH 5.5 is acceptable for St. Augustine; liming not needed.

The expert believes the lawn won't recover on its own. Strategy: preserve remaining grass, eliminate weeds and insects, fertilize and water. If damage is massive, re-sodding may be most economical.