One cockroach is a sighting. Repeated signs tell you whether there is a bigger problem.
Cockroaches hide well, so the insects themselves are not the only clue. A quick inspection of kitchens, bathrooms and appliance areas can reveal more.
Cockroaches hide well, so the insects themselves are not the only clue. A quick inspection of kitchens, bathrooms and appliance areas can reveal more.
Droppings and smear marks
Dark droppings or marks around cracks, cabinet corners and travel routes can point to regular cockroach activity.
Egg cases and young cockroaches
Egg cases or repeated nymph sightings suggest reproduction is happening nearby and deserve closer inspection.
Night activity and daytime sightings
Cockroaches are commonly active at night. Frequent daytime sightings can indicate disturbed or crowded harbourage, especially when other signs are present.
Odour and hidden harbourage
A persistent musty or oily smell can accompany heavier activity. Inspect warm, dark and damp areas around appliances, sinks and cabinets.
What people usually want to know
How do I know if cockroaches are living behind my fridge?
Look for droppings, egg cases, dead insects, nymphs and nighttime movement around the motor area and nearby gaps.
Does seeing one cockroach mean infestation?
Not always. Repeated sightings and additional signs are more useful than one isolated insect.
Why do I see cockroaches during the day?
Daytime sightings can happen when harbourage is disturbed or crowded, although the full context matters.
What should I do after finding signs?
Remove food and water sources, inspect hiding places, seal entry points and choose a treatment that matches the problem.