What is the most common bug found in houses?

The most common bug found in houses in the United States, according to surveys by the National Pest Management Association and pest control companies, is ants, particularly odorous house ants, followed closely by cockroaches, house flies, and spiders. Ants are the number one nuisance pest reported by homeowners because they are highly social insects living in colonies with thousands of workers, and when a scout finds crumbs or sweets in a kitchen, it leaves a pheromone trail that recruits hundreds more, forming long visible trails along countertops, sinks, and baseboards. Odorous house ants are tiny black ants that love sweets and emit a coconut-like odor when crushed, and they invade homes year-round but especially in spring and summer when foraging increases. Carpenter ants, which are larger black ants that excavate damp wood to build nests, are also common. After ants, German cockroaches are the most common indoor bug, small light-brown cockroaches that thrive in kitchens and bathrooms, contaminate food, produce allergens that trigger asthma, and reproduce extremely quickly with one female producing up to 30,000 offspring per year. House flies and fruit flies are also very common, breeding in garbage and overripe produce and spreading bacteria. Common house spiders, silverfish that eat paper and glue, pantry pests like weevils and Indian meal moths that infest flour and grains, and bed bugs which have resurged nationwide are also frequently found, but ants consistently rank first due to their ubiquity and persistence in entering through tiny cracks.