A. Contact Master Gardeners in your county for diagnosis and advice. They want you to bring photos and chunky grass samples which can be sent to UF for diagnosis by experts.
The Florida Master Gardener Program ? University of Florida, Institute of Food and Agricultural Sciences
B. Stuff (crabgrass) that gets in your yard very well may have ridden in on unwashed mowers, (and fungus/pests on hedgers, pruners.) I decided to do much of this work myself.
C. Mole Crickets love light. Consider location of damage to nearest light source. I'll be replacing my pole lamp with a yellow bulb.
Basic Biology of Mole Crickets