National Pesticide Information Center



Iron and phosphate are found in the environment, foods, and water. When combined and formulated, the granules can kill slugs and snails when eaten. Iron phosphate is Generally Recognized As Safe (GRAS) by the Food & Drug Administration (FDA). However, if any animal eats too much iron, it can cause stomach upset and other problems. After application, iron and phosphate tends to stay put, sticking to soil particles.

General Questions about Iron Phosphate

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Fact Sheet

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Q & A

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Slug Baits with Iron Phosphate

(2:11 min., 0.96MB)

Additional Resources:

If you have questions about this, or any pesticide-related topic, please call NPIC at 1-800-858-7378 (8:00am - 12:00pm PST), or email at npic@ace.orst.edu.

Last updated November 9, 2015