The answer to 'why is my cricket swarms' is that you likely have a cricket infestation in your home. Crickets are attracted to warm, moist environments and can enter homes through cracks and crevices, seeking food and shelter. Common signs of a cricket problem include hearing their chirping noises, seeing them scurrying around, and finding their droppings or shed exoskeletons.
There are a few main reasons why you may be experiencing a cricket swarm. Warm, humid weather can cause an increase in cricket populations, as can the presence of food sources and breeding sites inside your home. Crickets may also be drawn to your home if there are cracks or openings that allow them easy access.