Well, Muffin was a mouser! I've been lucky, because the only places I've ever known her to find any were in our garage and under the air conditioning unit outside! Wow! She wouldn't stop barking until "I" did something about them!!!!
Now, Kacee, she doesn't seem to pay any attention to them other than being a bit curious. One night we were in the garage and I saw one run toward the overhead garage door and Kacee looked at me like, "Mom, what was that?"