Make a bed of gravel, bark, or wood chips in your garden as this will make it hard for the snails to move around. Snails destroy the garden at night because the soil tends to be wet by then. So Water your plants in the early morning so that the upper layer of soil can be dry. You can spread adhesive copper tape in your garden or put some copper pennies here and there. Snail’s slime reacts with the copper and gets an electric shock. This will keep the snails away. You can keep some chickens in your garden to eat the snails. Also, you can sprinkle some broken eggshells. This will hurt the slimy body of snails.