I had mice when I first moved in here, 11 years ago. Plugging holes and leaving desiccants for them to eat (and die outside) worked and they were gone for a decade. A few days ago more mice appeared. Our exterminator left me some glue rectangles, and later our plumber brought some more. One of the advantages of living in a condo with a high condo fee. The glue traps work great, if the mouse goes over it, the mouse is stuck. Forever. Even if you wanted to let the mouse go, it's too sticky.
So far, four mice have Tread The Unyielding Path Of Nergal. The first one was so cuuuuute, it was almost hard to kill it and throw it in the dumpster. I carried it outside, getting a few comments from people who thought I was going to let it go, before whapping it on the dumpster door. The second was dead when I got home.
The third and fourth mice, slightly less cute than the first but still small and adorable, knew they were in trouble and panicked. One of them even squeaked. I felt neither power nor pity.
My condo, 10/6/08
Size note: Trap is sitting on a CD case
My condo, early am 10/8/08