Within a car's cabin, there are plenty of places for roaches to hide out of plain sight. Since they're attracted to food crumbs and leftovers, you can start by looking at the space underneath the seats. A lot of dropped food items usually pile up under there. Similarly, check underneath the floor mats too, as it's a common place for roaches to leave behind eggs. Then, there's the trunk and cargo area. There are various nooks and crannies to check back here, including the spare tire compartment, under-floor storage areas, or other hidden pockets. Elsewhere around your car, don't hesitate to inspect every corner to find traces of roaches. For example, there's the glovebox, A/C vents, door pockets, and more.