@Judi: “Help” is the key word. Traps ultimately are more effective, particularly if you aren’t around.
What doesn’t help? MIlo. (Boy, has he been letting the side down recently. I just caught three mice, sequentially, under my sink.) It’s part of the morning routine;
Get up, pee, brush teeth, get dressed, go downstairs, remove Havahart from under sink, empty trap in woods, scrub hands surgically, have breakfast.