The answer to 'natural mouse repellent' is to use natural deterrents like peppermint oil, vinegar, or ammonia around your home to help drive mice away. These strong scents can make your home less appealing to mice without using harsh chemicals. You'll need to reapply these natural repellents every 2-3 weeks to maintain their effectiveness.
It's also important to seal up any entry points around your home to prevent mice from getting inside in the first place. Look for cracks or holes larger than a pencil and use caulk or steel wool to block them. Removing food sources like crumbs and storing food in airtight containers can also discourage mice from taking up residence.