Photo confirmation checklist
Use these visual checks to compare the pest, the evidence, and the likely source area before choosing a treatment path.
Quick answer
What to know first
The strongest cockroach infestation signs are droppings, egg cases, nymphs, odor, and repeated nighttime sightings near food, water, warmth, or tight cracks.
Check first
- Cabinet hinges, drawer corners, appliance seams, and under sinks
- Pepper-like droppings, egg cases, shed skins, or small nymphs
- Leaks, grease, crumbs, cardboard, and warm appliance motors
Avoid this
- Judging severity from one visible adult only
- Spraying before identifying hiding areas
- Ignoring kitchens and bathrooms when activity appears elsewhere
Overview
Cockroach infestations are often confirmed by evidence rather than a single sighting. Droppings, egg cases, nymphs, odor, and nighttime activity show where roaches are hiding and how established the activity may be.
Key signs to check
What to do now
- 1Use sticky monitors to identify the most active hiding areas.
- 2Clean grease and food residue before using bait.
- 3Place bait close to cracks, hinges, appliance seams, and pipe openings.
- 4Fix moisture sources and remove cardboard clutter.
Prevention checklist
When to call a professional
Call a professional when roaches are seen during the day, nymphs are common, or activity spreads beyond one room.
FAQ
Does one cockroach mean infestation?
Not always, but one cockroach plus droppings, egg cases, or nymphs is stronger evidence of an infestation.
Where do German cockroaches hide first?
They often hide in tight cracks near food, water, warmth, and appliance motors.