pets. Zap mice with ultrasonic sounds. There are electronic units sold that emit an ultrasonic beeping sound that rodents hate. They should be available at your local home improvement store or online. These work only on a single line of sight, so you need to know the exact path the mice are taking. The units may only work for a short time because mice can become used to them. [4] Use a commercial, organic deterrent. Many companies that specialize in organic garden and home products make mice repellents that are better for the environment than traditional poisons. Many of these products use natural ingredients, such as peppermint, that are known to be disagreeable to mice. They will not kill mice but they should keep them out of areas