Mice contaminate more food than they eat and carry many diseases which can cause food poisoning.
Firstly, as a point of prevention try to remove all food sources. Good hygiene is essential to deter rodents. Eliminate all gaps and holes on premises, keeping areas clean and tidy whether it is external bin areas, compost sites, neglected wood or overgrown areas. Also, consider the drains and whether they are in a good state of repair.
Should you encounter an infestation our qualified Pest Controllers will happily recommend a proofing and housekeeping strategy which will determine the best course of action for control. This may involve rodenticides or traps or perhaps a combination of both.