The right way to tell mice vs rats apart tonight
Mice vs rats gets settled by a ruler, not a glance. Mouse droppings run 1/8 inch, Norway rat droppings 3/4 — and size alone will fool you on a young rat.
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Mice vs rats gets settled by a ruler, not a glance. Mouse droppings run 1/8 inch, Norway rat droppings 3/4 — and size alone will fool you on a young rat.

Rodent droppings identification comes down to a ruler — or a penny, which is exactly 0.75 inch wide. Here’s what size, shape, and age really tell you.

Scratching in the walls at night is usually a rodent — but flying squirrels, bats and the house itself all make the same sound after dark.

Rodent proofing starts with a material choice: extension research lists foam, vinyl and wood as ineffective against mice. Then there’s the legal half.