I do something wrong?

looks good and is well made.
Function is also given - although the practical success still is slow in coming.
Either I'm using the wrong bait (I have already tried bacon, cheese and chocolate - all to no avail)
or:
my mice are too dumb (and not find the entrance)
or:
my mice are too smart (and know that they are to be caught with it).
or:
my mice are avowed vegan (and the offer of nature is simply fresh and plentiful available).

Previous "catch statistics": null mice.
At least I have not lost my sense of humor ...

Postscript:
my mice like special treatment!
After changing the "bait" and the site I had to stay only one night or equal to 3 mice in a trap.
So work yet!

Why I forgive a star more ...