Ants outnumber just about every species on earth. They have developed a solid society based on a caste system that allow for the colony as a whole to survive no matter how many ants have to fall. The ultimate goal is save the queen save the future. It is this very basic structure that has allowed the ant to out live the majority of animals and insects on Earth.
Your stinkbug issue started probably a few years ago as a few. The next year you saw just enough for you to think you may need help but few enough to make you grab a broom instead. Year five or six of a stinkbug issue is really where your partner says “Honey I think we need to call a professional.” Listen to them,