Garlic Oil Spray is a great, safe insect repellent. Simply put three to four cloves of minced garlic into two teaspoons of mineral oil. Let the mixture sit overnight, and then strain the garlic out of the oil. Add the oil to one pint of water, and add a teaspoon of biodegradable dish soap. Store in a bottle or jar, and dilute the mixture when you use it by adding two tablespoons of your garlic oil mixture to one pint of water. for bean beetles!