Do you have attic mice?  The truth is, most people are unaware they have a problem in their attic.  Why?  Because mice are most active during the late hours of the evening and early morning.  To notice attic mice, you must be awake and below their activity location.  People who witness the sounds of attic mice will describe it as a faint scratching sound.

The best way to find out if you have attic mice, is to inspect the attic.  In the attic we are looking for a few signs of rodent activity.  Before entering the attic, be sure to take some safety precautions. It is recommended to wear goggles and a dust mask to protect eyes and lungs from insulation particles.

  • The first sign we are seeking will be visual evidence of mice droppings.  Rodent droppings are: ¼ or less in length, black in color, and resembles a celery seed or grain of rice. To find out more about rodent dropping and their identification, check out our
  • Rodent tunnels in the insulation:  Scan over the insulation and look for holes or tunnels.  Once rodents seek shelter in attic space, they will create tunnels or “runways” to travel throughout the structure.  Runways are usually 1-2 inches in diameter.   
  • Rodent nests-  Usually not visible or easily found, especially in an attic…  Mice nests are usually hidden in locations not easily reached.  A nest can be made up of various materials such as paper, straw, insulation, cotton, etc. .


There are a few options for rodent removal in the attic space.  Checkout the options below and see what works best for living situation.  There are positives and negatives to each method.


Bait & place traps in areas which are displaying activity.  If you go this method, be sure to count how many traps you are using and remember where you place them.  Most people find this option the most difficult to execute.  Snap-traps must be monitored on a daily basis.  They must be emptied (dead mice), baited and reset.  If you can't venture into the attic every day and monitor the traps this may not be the best method for you.

Live Trapping

What is a live trap? Most “live traps” look like a box-like structure but can come in many different styles and shapes.  This rodent contraption allows curious mice to enter trap and then locks them inside.  Usually people will release the mice back into the wild.  The biggest mistake:  Do not release mice outside your home.  If the rodents are release outside the home, they may venture back into the structure.


This is the easiest way to control attic mice. The positive: You do not have to check the stations or change the bait on a daily basis.  The downside to poison:  Once the mouse consumes a lethal dose, they will die.  Wait…What’s the problem?  We can’t control where the rodents will die.  So mice can possibly die inside your home and leave an unpleasant odor.  If this method is best for you, be sure to place poison in a tamper-proof stations to avoid secondary poisoning.   


After catching and removing the attic mice... You must figure out how they gained entry to the attic. To do this, you must inspect the outside of the structure for entry points.

Common Entry Points To Check

Inspect the entire exterior perimeter of the structure. Remember, if there is a gap larger than the diameter of a pencil, mice can gain entry. Be sure to check the following spots...

  • Where brick walls meet soffit: Mice will run straight up the wall and into attic.
  • Large & deep weep holes in brick
  • Damaged Dryer vents
  • Damaged Roofing vents
  • Pipes & electrical lines leading into the structure
  • Gaps surrounding water spigots
  • Improperly installed vinyl or aluminum siding
  • Windows & doors: Make sure there is no gaps leading into the home
  • Corner posts of vinyl & aluminum siding: There should be a cap preventing rodents from running up to attic. You could purchase the caps @

Lock Attic Mice Out

After you have eliminated the attic mice, it is time to seal all entry points. Hire a handy man or do the work yourself. Some materials you may need to seal up are copper meshing, caulk, sealant and spray foam. Remember if you do not seal up, new rodents will most likely appear.

A.N.T. Pest Control is a licensed, certified and insured company. We serve New Lenox, Manhattan, Joliet, Frankfort, Mokena, Tinley Park, Orland Park and the surrounding suburbs.

Contacts Us

1200 S Cedar Rd #2D/E
New Lenox, IL 60451


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