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Can Mice Climb & Where Exactly Can They Fit & Go?

Short answer? Yes, mice can climb. If that’s all you needed to know, thanks for stopping by and have a nice day!

If you wanted to know more about the impressive abilities of these household pests, like how mice enter homes, keep reading, we’ve got answers.

Do mice have bones?

Yes, mice have bones. No, mouse skeletons don’t “collapse.” Mice are just very small and effective home invaders. An average house mouse is between five and eight inches long and weighs only an ounce or less. A mouse’s skull is the biggest part of its body; if its head can fit through an opening, the rest of the body will fit as well. Unlike humans, mice have a sloping clavicle, or collarbone, which makings squeezing through small spaces easy.

The whiskers of a mouse can sense if there is enough space for the rest of the body to follow. That’s one reason mice always go nose first instead of backing up in reverse. Mice rely on their sense of touch and smell to navigate tricky spaces.


Can mice climb?

Yes, mice are excellent climbers and jumpers. As a matter of fact, mice can easily jump distances of two feet and climb up stairs, furniture, roughened walls and landscape features. What looks like a lovely trellis or climbing ivy to you looks like an invitation to a mouse. Pipes, wires and ropes are frequently used by mice as travel pathways.

Mice don’t seem to have a fear of heights and enjoy exploring the areas near their nest. They will climb in search of food, nesting materials, or to escape danger like a predator.

How small of a hole can a mouse fit through?

sharpened pencilIf you want to keep mice out, you need to know how much space they need to get in. A mouse can squeeze through an opening that is just the size of a pencil. Keep that in mind and do an inspection of your home to find potential entry points. Gaps along the edges of doors, or openings for plumbing and utility lines offer an easy way in for a mouse. Inspecting the outside of your home at night, with all of the lights on inside may make it easier to notice small openings because you will see light shining through.

Mice also enter homes, buildings and other structures through the roof. Dryer vents, chimneys, and HVAC conduits can all provide easy access for rodents into your home. Block potential entry points with silicone caulk, steel wool, wire mesh or hardware cloth.

Knowing the small spaces mice use to enter a home will make it easier for you find and assess pest problems and infestations. Click below for more information about what attracts mice and how to keep them outside where they belong.