Each time you crack an egg open, instead of tossing the shell into the trash, drop it into an open container that you keep in the fridge. (I’ve always saved my shells, but my friend Susan suggested keeping them in the fridge – works beautifully.) When the container is full, crush the shells into small bits and sprinkle them around the base of your plants. The sharp eggshells will deter slugs, snails, and other bugs from nibbling on your garden and add a touch of calcium to the soil