13 reasons you shouldn’t be throwing your eggshells away March 23, 2026 by Youssef ADVERTISEMENT 🦌 9. Repel Deer Naturally If you live in a rural area, scatter eggshells near your plants. Deer dislike their smell and will keep their distance. 🌿 10. Use as Biodegradable Seed Starters Use half eggshells as mini seed pots. Rinse the shell Fill with soil and seeds Place in a carton by a window ←PreviousNext→