Spring not only brings showers and flowers, but, unfortunately, fleas! To keep your pets and home free of these pests, mix 1 1/2 cups of food-grade diatomaceous earth (this is a powder made from microscopic shells sold at garden stores), 1/4 cup powdered rosemary, and 1/4 cup powdered lemongrass. Rub this powder into your furry friend and rugs twice a week. This should bar any unwanted guests from visiting.