Place traps along walls, as that's where rodents scurry.
Glue traps are sort of cruel, but I had to resort to them too.
Fill any gaps with steel wool.
I had to install an oak sill where garage door meets the concrete to keep rodents out.
Also better fastened the molding o/s the garage door opening.
Don't remember having to bait glue traps.
Let us know if the mice repeller system works, please.
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Something too large for the regular no-kill traps was in my garage. Escaped a few times.
Finally, as above, had to go to a large glue trap.
Placed it on a Saturday. Checked Sunday morning and found a lot of fur on the trap, but no animal.
Yet, that was the last sign of it.
I simply assumed it left town, embarrassed by its huge bald spot...