lelimlelly, wilkommen, (welcome), here is my respectfully submitted advice. To rid the Earth of garden slugs, any of the following could be used in small amounts: Land mines, nerve gas, or dynamite! Do you ever swat a mosquito? Das selma, (same thing). I guess it boils down to: Do you want a garden or a snail farm/ranch? LOL. Additionally, just step on them much harder! Cheers! Guten Tag.