Identifying Attic Noises: Inspection Over Speculation

Question: Scratching/chewing in crawlspace attic at 4 AM and 9 PM. Fluttering/shaker sound when ceiling banged. Lynn, MA. What animal? Best removal method?

Answer: Noise Alone Cannot Diagnose

Different people "hear" differently. Animals change schedules with weather/light; mechanical noises don't.

Structured Investigation

1. Pattern? Same time daily? Weather-related?
2. Mechanical sources? Pipes, vents, expansion/contraction?
3. Duration? Weeks = animal not trapped (must exit for food/water)
4. Exterior inspection: Check entire structure for holes ≥¼ inch

Hole Size Quick Guide

• Golf ball = rats, flying squirrels
• Baseball = gray squirrels
• Grapefruit = raccoon

Why Inspection Beats Guessing

Noise is like telling a doctor "my knee hurts"—could be strain, tear, arthritis, cancer. You need an exam, not a phone diagnosis.

Next Steps

• Take free structural inspection course
• Follow methodology precisely (critical for mice/bats)
• If unsure, hire a qualified professional

Don't trap blindly—identify the entry and species first.