Identifying Holes
Where are the holes located?
Structural Holes
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Structural Hole Identification
Hole sizes only tell us only what animals could NOT enter the building. For instance, a mouse-sized hole cannot be used by a tree squirrel or skunk, while a raccoon-sized hole can be used by a smaller animal such as a squirrel.
| Size of a pencil (3/8″), think: |
Size of a quarter (1″), think: |
Size of a baseball (1½”- 3″), think: |
Size of a grapefruit (4″+), think: |
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| Mouse, Bat |
Rat, Chipmunk, Flying Squirrel |
Tree Squirrel, skunk |
Raccoon |