The answer to 'how did ant get in my house' is that ants can enter your home through even the smallest cracks and openings, seeking food, water, or shelter. Common causes include improperly sealed doors and windows, cracks in the foundation or exterior walls, and entry points around pipes or utilities. You may start to notice ants in your kitchen, bathroom, or other areas of the home.
To address an ant problem, you'll want to first identify and seal any potential entry points around your home. This can involve caulking cracks, repairing damaged weather stripping, and ensuring doors and windows close tightly. You can also try DIY ant baits or sprays to help eliminate the colony, but for persistent or widespread infestations, it's best to call in a professional pest control technician who can properly assess and treat the issue.