Eggshells should definitely not be ignored: they are an affordable ingredient for very high-quality fertilizers.
The advantage of the shell is not only its nutritional value, but also its “free” nature: we buy eggs for culinary purposes.
The composition of eggshells can be safely called impeccable. It is a valuable source of calcium, phosphorus, silicon, potassium and many other elements.
Adding eggshells to the soil will make it looser and better quality. Two glasses of the product per square meter will be enough.
Many pest control products can be dangerous for pets, soil, plants themselves, and even for the gardener. Therefore, it is necessary to use natural options whenever possible.
If you simply lay out shells (previously slightly crushed) on the site, you can get rid of slugs.
You can often find references to egg powder. This feed is easy to prepare: you just need to grind the shells to a powder state using a coffee grinder.
Afterwards, it can be sprinkled under plants or used for infusions and solutions.