Identifying Holes
Where are the holes located?
Structural Holes |
Ground Holes |
![]() |
![]() |
Structural Hole Identification
Hole sizes only tell us only what animals could NOT enter the building. For instance, 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: |
![]() |
![]() |
![]() |
![]() |
Mouse, Bat | Rat, Chipmunk, Flying Squirrel | Tree Squirrel, skunk | Raccoon |