Secret Sources 2008

To keep deer from nibbling your garden, spray plants with…salad dressing? The active ingre­dients—garlic, egg solids, and capsaicin (a compound in chili peppers)—in Deer Off come from the kitchen and act as a dual deter­rent with a foul flavor and odor. An earlier version, infused with stinky egg alone, was hands down the most effective repellent in an extensive study by Auburn University's College of Agriculture. A 16-ounce bottle is about $10.25 from Havahart.