Seeing live roaches, especially at night
Finding droppings that look like black pepper, coffee grounds, or small dark pellets
Noticing a musty, oily, or unpleasant odor
Finding shed skins or egg cases
Seeing smear marks along walls, baseboards, or cabinets
Finding roach bodies or body parts
Spotting them in kitchens, bathrooms, behind appliances, or near drains
Seeing signs of activity in cracks, crevices, or under sinks
Finding damage to food packaging, paper, or cardboard
Noticing increased activity after lights are turned on
Seeing roaches during the day, which can suggest a larger infestation