A two-inch-deep hole is the maximum size that a squirrel can fit through. A squirrel’s head is small, but its body is surprisingly large. They can squeeze through a one-and-a-half-inch hole without any problem. If you are concerned about squirrels in your yard, consider that these animals can fit through holes as small as one-and-a-half inches!
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A gray squirrel can fit through a quarter-sized hole. If you are worried that your attic is a prime target for a squirrel infestation, use a Starrett dial caliper to measure the hole’s diameter. A machinist uses this tool to measure the dimensions of holes and is familiar with the measurements of small holes. But a squirrel’s body can shrink to fit a small hole, which is why it may be tempting to leave your attic unprotected.
Some researchers claim that a squirrel can fit through a hole as small as a quarter-inch wide. These measurements were based on experiments, where they stuffed bread crumbs with peanut butter inside a square hole. However, this is not a guarantee, and some squirrels may be able to squeeze through a slightly smaller hole if they are fed well enough.
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Squirrel Holes
The gray squirrel is one of the few species that can fit through a hole as small as a quarter-inch deep. Despite the fact that this species is smaller than most humans, they have the ability to squeeze through very small holes. Its small body and head size make it easy for the squirrel to get through tiny holes. But they may not be able to make the hole as small as they need to.
Squirrels can fit through very small holes. They can fit through a hole as small as a quarter-inch. The size of the hole in a wall of a house can vary significantly. If you’re concerned about squirrels in your home, you can seal the hole with a half-inch-wide wire mesh. This will prevent the rodent from getting in.
Typically, a squirrel can fit through a hole that is a one-half inch wide. But a small hole is more suitable for a mouse. A golf ball-sized hole can fit a baseball. A quarter-sized hole is the best size for a squirrel to squeeze through a hole. It can also squeeze through holes in a wall. Even a one-inch hole is just the right size for a small rodent to get in.
In fact, a quarter-size hole will be a good fit for a gray squirrel, but it’s not a good size for a flying squirrel. A half-inch-wide hole can be used for a golf ball-sized hole. Regardless of its size, a small hole is not ideal for a flying squirrel.
Read :- What To Feed Squirrels
A typical hole in a golf ball-sized hole can also be a baseball-sized hole. Those with larger holes can chew through a golf ball-sized hole, so it’s important to protect your home from a squirrel infestation.
A squirrel’s nose can fit through a one-inch-wide hole. It can also squeeze through a quarter-size hole. A one-inch-wide hole is not a problem for a flying squirrel. A golf-sized hole is perfect for a gray squirrel. If a golf-sized hole is too small, the squirrel can chew through it.
Final Thoughts
When a squirrel tries to gain access to a home, it can get in through small holes. This is especially true if the squirrel is a female and needs to feed her young. A small hole is too large for a gray or flying squirrel to fit through it. In order to keep a gray squirrel out, it is important to prevent them from entering your house.

Jessica Watson is a PHD holder from the University of Washington. She studied behavior and interaction between squirrels and has presented her research in several wildlife conferences including TWS Annual Conference in Winnipeg.
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