Prevention
Chinch bugs, a small insect only 3/16ths of an inch long, only occur on grass grown on unhealthy soil. Strong synthetic fertilizers and pesticides encourage chinch bugs and other lawn problems by killing off the soil organisms, microbes, that help keep a lawn healthy and by killing off fungi and viruses that normally keep chinch bugs in check. Use only slow-release organic fertilizers or well-aged compost to fertilize lawns.

• Mow high in summer heat (3" for St. Augustine). A short lawn is heat stressed and dries out more quickly (chinch bugs prefer dry conditions).
• Mulch grass clippings. Do not bag. Beneficial microbes that attack chinch bugs need the clippings as a food source.
• Molasses will also stimulate growth of microbes that prey on chinch bugs.
• Consider minimizing or eliminating turf grass areas or increase shaded areas. Chinch bugs are not a problem for ground covers.
• Apply cedar granules – this acts as a repellant.

• Prepare a solution of 2 tablespoons of mild soap, 7 tablespoons soybean oil and 2 tablespoons kelp extract per gallon of water. Drench areas every 3-4 days.
• A product called Naturalis O™ contains a beneficial fungus called Beuvaria bassiana which attacks chinch bugs. This fungus naturally occurs in many soils, but is often killed off by the use of chemical fungicides. Apply Naturalis O™ in spring when conditions are moister and the chinch bugs are less active.

Note: Most beneficial fungal products are most efficient if applied during moist, warm (but not hot) weather.