Would something like
this work with a bit of choclate in it ?
That's exactly the same as the one I used!
Edit to add: Placement is the important thing here. Mice like to run along the edges of thing, so place the trap against a wall where the mice will run into it. They'll be inquisitive, especially if they smell food. Now apart from the fact that I used to catch multiple mice at a time and we got rid of them all, I've actually seen the trap in action...how? Well...
I was transferring the mice into a box to trabsport them to the woods - I was in the back utility room at the time ... but what I didn't know about yellow necked mice was that they can jump ... oh yes! One jumped clean out of the transport box at which point I dashed after it as it went into the kitchen, made a full circuit, out into the hall and into the front room ... with me bounding on all fours after it ... only to see it disappear under a seat.
Hmm, problem! I was due to go out to work and I couldn't leave the thing under there in case it decided to take up residence. So, what did I do?
Step 1: Think
Step 2: Plan
Step 3: Acting
Step 4: Breath a sigh of relief and a virtual pat on the back
The reasoning was that if mice liked to run along walls then all I had to do was place the live trap against the wall and then lift/tilt the seat in such a way that the mouse would be encouraged to run towards the wall and then along it in the direction of the trap ... easy does it ... and BINGO ... the little critter ran straight back into the trap that it had just spent the night! D'oh!
There was only one mouse that died in the trap - it looked like it had tried to gnaw its way out and suffered cuts to its nose, it then seemed to get all sweaty and then died. I think the poor wee thing dies of shock. All the others were fine though ... bounded off into the forest with gay abandon!