Saw a mouse in living room, put traps down and bait is still there and no signs of any mice?

One mouse appeared and I kept hearing rustling 4 days prior every night but didn't see anything.

Finally saw the little f*cker run across the living room floor

After this i removed the bag of chocolate it was going towards, put a trap down in that area also and have not heard or seen anything since and the bait is still on the trap, its been a week now since putting the trap and nothing

Also cannot see any mice droppings and I blocked up outside holes where it may have come from.

I also put poison down in the cupboard underneath the stairs where they notoriously live and also a heating cupboard upstairs

Why hasn't it come back? And why isn't it going to the chocolate on the trap?

Saw a mouse in living room, put traps down and bait is still there and no signs of any mice?
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