Eggshells can be effective barriers that will stop snails and slugs from getting to your vegetable garden plants. However, you have to build the right barrier with eggshells crushed to the right size.
The sharp edges of the eggshells irritate the skin of the pests. The barrier has to be wide enough to stop a slug from stretching over it and you have to put enough eggshells down so the snails can't work their way through it.
|Making a Garden Snail/Slug Eggshell Barrier|
This video shows you the general size to crush the eggshells and explains the general principle for making the barrier. Remember your barrier has to maintain itself even after a heavy rain. If your eggshell particles are two small they will be washed into the soil. If they are two big, the snails and slugs will be able to go over them with out getting deterred.
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