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How to Identify Mouse Droppings

Can Diseases Be Spread By Mice Feces?

Mouse feces indicate areas where mice are most active. Measuring approximately 3 to 6 mm in length, they are granular in shape and black in color. Mouse feces are commonly mistaken for cockroach or rat droppings.

Mouse droppings are concentrated near breeding and nesting grounds, although they may also be seen in other areas of the house from time to time. Feces are also present near items that have been destroyed by mice during the nesting process. They can be found in chewed cardboard boxes, invaded drawers and near damaged electrical wiring.

These droppings may carry harmful bacteria, diseases and viruses and should not be handled without the use of protective gloves and an OSHA-approved respirator and functioning cartridges. Hantavirus is contracted through the inhalation of particles of contaminated feces, as well as inhalation or ingestion of an infected mouse's saliva or urine. Disturbed droppings are more likely to emit virus particles, so it is unwise to sweep or vacuum areas where feces have been found. Rather, droppings should be picked up carefully and disposed of in plastic bags.

Mouse Anatomy

What Do Mice Eat?

Mouse Home Infestation

Differences Between Rats and Mice

Resources

Dig Deeper on Mice

What can we do about the mice above the ceiling?

Q

Our basement is finished with JYP rock tiles on the ceiling, and we can hear at times (especially at night) mice scurrying above. What can we do?

Is it a mouse or a rat?

Q

I can't tell if I have large mice or adolescent rats.

What should we do about mice in crawl space and attic?

Q

What should we do besides put traps out?

Is it a mole or a mouse?

Q

No websites give any information on getting rid of one in the house. Any advice would be greatly appreciated.

Mice in the oven

Q

How do you make sure there is no infestation, or that they have been removed? Is it safe to use the oven?

Mouse droppings in the house

Q

We cleaned out the closet by the kitchen where we have seen the old droppings and have not seen any more. Are they gone?

What attracts mice in your house?

Q

What attracts mice in your house?

How to Use Mouse Bait Stations

How to Find a Dead Mouse in the House

Field Mice

Field mouse illustration

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