Edinburgh residents can put eggs shells in their household or on-street food waste recycling bin (see FOOD WASTE). 

Crushed egg shells can be put around the base of tender plants. This may help to deter slugs and snails.

If you have a compost bin at home you can crush the egg shells and add them to the pile to reduce acidity (they contain a small amount of lime). Egg shells are very good for your home compost as they also contain calcium and other minerals (see COMPOSTING).