Live Cockroaches: Mostly Seen at Night, But Daytime Sightings Indicate Overcrowding Cockroaches are nocturnal and prefer dark, warm, and humid spaces. They are commonly found: Running along kitchen counters and floors when the lights are turned on Hiding behind or under appliances such as refrigerators, stoves, and microwaves Crawling near water sources, especially under sinks and inside bathroom cabinets If cockroaches are seen during the day, it means the infestation has grown so large that some are being forced out of their hiding spots due to overcrowding. This is a serious red flag. Shed Skins: Exoskeletons Left Behind as Nymphs Grow Cockroach nymphs shed their exoskeletons multiple times before becoming adults. These discarded skins can accumulate in: Cabinets and drawers Behind or under appliances Along baseboards and in cluttered storage areas Finding multiple shed skins indicates a developing infestation with a growing population. Smear Marks: Greasy Streaks in High-Traffic Areas In humid environments, cockroach droppings can smear, leaving behind dark, greasy streaks along surfaces where they frequently travel. These marks may appear: Along baseboards and cabinet edges Near cracks, crevices, and corners Around water sources such as sinks and pipes These streaks can be a clear sign of an active infestation, showing areas of heavy movement. Damaged Food Packaging: Evidence of Feeding Cockroaches are scavengers that feed on a wide range of materials, including food crumbs, grease, and even glue from packaging. Signs of feeding activity include: Tiny chew marks on food packaging Food crumbs and debris scattered inside pantries and cupboards Unusual holes in plastic bags, cardboard boxes, or paper packaging Since cockroaches can spread bacteria and contaminate food, any affected items should be discarded immediately. Unusual Behavior in Pets: Increased Interest in Certain Areas Pets, especially cats and dogs, may become fixated on areas where cockroaches are hiding. If a pet frequently sniffs, paws, or stares at a particular spot—such as under the fridge or inside cabinets—it may indicate pest activity. Why Early Detection Matters Cockroaches multiply rapidly, with females capable of producing up to 400 offspring in their lifetime. Because they can spread bacteria and trigger allergies, taking action at the first sign of an infestation is crucial. If any of these signs are present, professional pest control treatment is recommended to fully eliminate the infestation.