Rats/ mice in the walls?

So I think I hear mice in my walls. Its a three story building with no attic that I can see. So I cant check for droppings, but I haven’t found any droppings inside yet. Is there any way to get rid if them without putting a hole in my wall? Pretty much looking for a way to do this without needing an exterminator.... show more So I think I hear mice in my walls. Its a three story building with no attic that I can see. So I cant check for droppings, but I haven’t found any droppings inside yet. Is there any way to get rid if them without putting a hole in my wall? Pretty much looking for a way to do this without needing an exterminator. Thanks for any advice.
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