Don't throw out eggshells. Crush them up and throw them into your garden. They provide needed calcium to the soil as they decompose and the sharp-edged shells keep snails out of your beds.
Diatomaceous earth, available in pool supply stores, works as well. If the snails try to crawl over either material, the sharp edges slices up their obnoxious bellies.
By lindal from Vista, CA
Great idea-- I'm spending a fortune on Sluggo.
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Sprinkle broken eggshells around your strawberry plants to deter snails.
By Mrsburgo from Newcastle NSW
I've read this works for slugs too. It only makes sense since the two are so similar. (05/20/2009)