2. Grind the eggshells into powder, put them into ceramic utensils, thermos bottles and glass bottles, add appropriate amount of water, and shake them left and right to remove dirt. If the oil pollution is serious, put it into the eggshell and add water 1-2 days, and shake it several times.
3. Soaking fresh eggshells in water will produce a mixed solution of protein and water, which can be used to wipe glass or furniture and increase luster.
The kettle for boiling water has a thick layer of scale, which is difficult to remove. You can remove all the eggshells by boiling them twice.
5. Pour the water for cleaning eggshells into flowerpots, which is helpful for the growth of flowers and trees. Crushing eggshells and putting them into flowerpots can not only keep moisture, but also provide nutrients for flowers.