12.  Mole Crickets
Small mounds of soil are scattered on the soil surface. The lawn feels spongy underfoot. Large areas of grass turn brown and die. To determine if the lawn is infested with mole crickets, make a solution of 1 ounce of liquid dishwashing detergent in 2 gallons of water. Drench the mixture into 4 square feet of turf. Mole crickets, greenish gray to brown insects, 1½ inches long, with short front legs and shovellike feet, will come to the surface within 3 minutes.