Start with where you found it
- Kitchen, bathroom, drain, pantry, trash area, or pet food area
- Garage, door threshold, block wall, storage boxes, or exterior lighting
- Attic, roofline, eaves, utility penetrations, or wall void noises
- Closets, stored fabrics, baseboards, bathrooms, or laundry areas
- Artificial turf, pet runs, irrigation edges, damp spots, or debris piles