A: Mice and rats are not fussy eaters. In the wild, they will typically eat seed, grains and fruit, but if the rodents are in your home, they will gnaw away at almost anything they can find. Dry foods like cereals are easy targets, but both rats and mice will be indiscriminate when it comes to sustenance. Don’t be surprised to see evidence of rodents around bins and waste food – this is a common factor in the initial attraction of mice and rats to your home in the first place.