Having the random sighting of one of these insects is quite normal but regular sightings are not. These insects are associated with some form of water or a moisture issue in the house or very close to the house.
An inspection is needed to find the moisture areas and correct them. Treatment plans are very effective. They are more effective following the IPM (integrated pest management) approach which is identifying the source of moisture, correcting the conditions (where possible) and then a treatment.