In the vast majority of the United States, weather conditions are such that moths do not live outdoors, in the wild. Though theoretically possible, it is not the norm for moths to enter your home on their own accord, from outside. Especially considering that they can only survive outside in mild warm weather.
Moths are better known as homebodies - they don't typically go exploring for new sources of food and shelter. The vast majority of moths are introduced into homes by infected items. Whether that's a bag of grain that you purchase at your local produce market, or a carpet that carries a few eggs with it, just waiting for the warmth of spring to burst out of their shells and start munching.
Dr. Killigan's moth traps have a 25-foot radius. So, technically speaking, if you regularly leave your doors and windows open, and moths are immediately outside your home, they would be able to smell it and possibly come inside. However, this is very unlikely.
We recommend using the traps to assess whether or not moths are currently present in your home, and preemptively cut short the mating cycle to prevent an infestation. If you feel concerned about attracting moths from outside your home, we recommend placing the traps in a location where they are at least 25 feet from an open door or window, and that should be sufficient to prevent any possibility of attracting the unwanted pests.