Epsom salt is a natural mineral compound of magnesium and sulfate. Spreading a thin layer around plants and entry points can create a less appealing environment for chipmunks.
Additionally, you can mix the Epsom salt with Lysol because it emits an unpleasant odor that affects the chipmunk’s senses, signaling a challenging environment to them.
One tablespoon of Lysol disinfectant liquid with about ⅓ cup of Epsom salt (three ounces) and one gallon of water is a simple but potent mixture to keep chipmunks at bay.
Use a spray bottle or garden pump sprayer to apply the mixture to areas where chipmunks are frequently seen. Avoid spraying it directly onto plants, as it could cause damage.