The answer to 'cricket invasion' is that a sudden influx of crickets in your home is a common pest problem, often caused by an increase in their population or them seeking shelter from changing outdoor conditions. Symptoms include hearing chirping noises, seeing the insects around your home, and finding dead or dying crickets. The best solutions depend on the severity of the issue, but generally involve a combination of DIY pest control methods and, for severe infestations, calling in a professional exterminator.
For minor cricket invasions, you can try DIY methods like sealing entry points, using insecticide sprays or traps, and removing any food sources or clutter that may attract them. However, if the problem persists or becomes widespread, it's best to contact a licensed pest control expert who can properly identify the species, assess the extent of the infestation, and apply the most effective treatments.