Crickets: a late-summer swarm that feeds scorpions.

Identifying crickets

Most of the crickets that swarm Valley homes are field crickets (Gryllus). They are black to dark brown, about an inch long, with long antennae and big hind legs for jumping. Males make the loud chirping sound by rubbing their wings together.

Field crickets live outdoors in soil cracks, rock landscaping, turf and under debris. Populations build up through the summer, and after monsoon rains and into early fall the adults move around in large numbers. They are strongly attracted to bright lights at night, which is why they pile up at porch lights, garage doors and storefronts.

Crickets slip in under garage doors and through gaps around doors and windows. Once inside they hide in dark, cluttered spots and chirp at night. Many die inside, and piles of dead crickets can smell. Homes on the edge of open desert, fields or new construction often see the heaviest numbers, because crickets move in from the surrounding land.

Why they matter

Crickets do not bite people or spread disease, though they may chew on fabric, paper or stored items when they get inside. The bigger concern is that crickets are a favorite food of bark scorpions and black widows. A yard full of crickets can support more of the pests you really do not want around your home.

Signs of activity

• Loud chirping at night from walls, garages or the yard
• Crickets piled up around porch lights and garage doors
• Dead crickets collecting in corners of the garage and patio
• Crickets inside after monsoon storms
• More scorpion or spider sightings around the same time

Prevention tips for Arizona homes

• Switch exterior lights to yellow bulbs or put them on motion sensors
• Close blinds at night so indoor light does not draw crickets to windows
• Install door sweeps and weatherstripping, especially on garage doors
• Cut back watering where you can and fix irrigation leaks near the foundation
• Keep grass trimmed and remove leaf litter and debris near the house
• Sweep up dead crickets so they do not attract other pests

When to call a pro

If crickets are pouring in every night or you are seeing scorpions and widows along with them, it is time to treat. Bryce treats the exterior where crickets gather and hide, which also cuts off food for scorpions. Monthly plans include free re-service between visits.