Knowledgebase

Please identify droppings #912080

Asked July 30, 2025, 8:12 PM EDT

What are these droppings? I discovered them yesterday in guest bedroom, on the sheets, under the pillows. This room is not used frequently, but I do keep it clean and sheets washed. Thank you for your help.

Deschutes County Oregon

Expert Response

Those are either very small mouse droppings - likely house mice (Mus musculus), or roach droppings. The penny is helpful and the shape suggests mouse droppings, but mouse droppings are usually about 1/4" and these look smaller than that. If you have a magnifying glass, look on the surface for distinct ridges - Ridges= roach, otherwise, house mouse. 
Dr. Dana Sanchez Replied July 31, 2025, 1:59 PM EDT

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