You could try using peppermint oil - mice hate the stuff. In a previous house we had a mouse problem and placed balls of cotton wool soaked in peppermint oil (not the worse smell in the world for us humans) around the kitchen and other areas where the mice had been. Within a couple of weeks, and a few top ups of the oil (it dissipates quite quickly) all traces of the mice had disappeared and they never came back.
We did the pepper mint oil on cotton wool thing.
It didn't work one bit.
Then when we moved house we found all the balls of cotton wool had been dragged underneath the sofa and shredded to make a lovely little nest for the fuckers.
You could try using peppermint oil - mice hate the stuff. In a previous house we had a mouse problem and placed balls of cotton wool soaked in peppermint oil (not the worse smell in the world for us humans) around the kitchen and other areas where the mice had been. Within a couple of weeks, and a few top ups of the oil (it dissipates quite quickly) all traces of the mice had disappeared and they never came back.