The answer to 'natural mouse repellent' is to use natural deterrents like peppermint oil, cayenne pepper, or ammonia-soaked cotton balls. These scents can help drive mice away from your home without the use of harsh chemicals. Place these repellents in areas where you've seen mouse activity, such as along baseboards, in corners, or near entry points.
It's important to regularly reapply these natural repellents, as their scent can fade over time. Additionally, make sure to seal any cracks or entry points in your home to prevent mice from getting in. If you continue to have a mouse problem despite these efforts, it may be time to call in a professional pest control expert.