Crickets are very common in the late summer months which is their mating season. Some years they are everywhere and others there are very few. They make a chirping sound which can be an annoyance and if they find a way in can be a huge nuisance. We control them when they become an issue. They are usually nocturnal and stay hidden during the day. Diet: Most species are omnivorous and can eat just about anything depending on their surroundings. They will feed on anything from flowers, fruits and leaves to larvae, moulting insects, dry dog food and aphids.