Monterey LG6530 Sluggo® Slug & Snail Killer, 5 LbsThis Sluggo Slug & Snail Killer contains a unique combination of iron phosphate, which is a plant nutrient that occurs in soils, with slug and snail bait additives. Iron phosphate is a plant nutrient that occurs in soil and is used as an ingredient in fertilizers. The bait which is not ingested by snails and slugs will degrade and become a part of the soil. The bait is ingested by slugs and snails when they travel from their hiding places to plants.