I have snail problem in my garden
They have eaten 2 lots of my Dalhia seedlings now errrrr. I even put egg shells around them the 2nd time but by the next morning there was nothing left again
That method is for mixing into soil or sprinkling around the plants, which I've never heard of working and it might attract other pests. I've never heard of shells being used for butterfly/moth damage prevention.
I have snail problem in my garden
They have eaten 2 lots of my Dalhia seedlings now errrrr. I even put egg shells around them the 2nd time but by the next morning there was nothing left again
Is Sluggo available in your country? It's harmless to people and organic. If not any iron based slug killer will work . I've worked in the green industry almost 20 years it's my go to recommended product for slug control.