The key to keeping squirrels and chipmunks out of gardens, homes and structures is prevention. That's why we created our all natural Squirrel Stopper repellent. Our humane and safe Squirrel Stopper can be used indoors or out as it creates a sensory barrier that works by smell, taste and feel. Apply Squirrel Stopper every 30 days, regardless of weather or water. Pleasant to use as it dries clear and odor free, our liquid Squirrel Stopper is an excellent first line of defense against squirrels and chipmunks.