Wild Hedgehog Threats: Garden Chemicals, Slug Pellets and Safe Alternatives

Common garden chemicals including slug pellets and some pesticides directly harm hedgehogs. Understanding safer alternatives helps gardeners protect hedgehog welfare while managing their gardens.

Key Facts

Metaldehyde slug pellets are directly toxic to hedgehogs and were banned for use in UK gardens from 2022
Ferric phosphate slug pellets were considered safer alternatives but some research suggests they may also cause harm
Pesticides that reduce slug and invertebrate populations indirectly harm hedgehogs by reducing their food supply
Hedgehogs consume approximately 70-100g of invertebrate food nightly - adequate invertebrate populations are essential
Copper tape, physical barriers, and encouraging natural predation by other wildlife are chemical-free alternatives to slug control
Water features that attract frogs provide natural slug predation that reduces pest pressure
Composting food waste attracts invertebrates that form the base of hedgehog food chains
Native planting that supports diverse invertebrate communities benefits hedgehogs indirectly through improved food supply

Welfare Considerations

Garden chemical use represents an invisible but significant welfare threat to hedgehogs. A hedgehog that consumes a toxic slug pellet dies from internal hemorrhage - a slow, distressing process. One that forages in a pesticide-saturated garden finds reduced invertebrate prey and potentially sublethal chemical exposure that impairs its health. The garden environment shaped by millions of individual choices can collectively sustain or undermine local hedgehog populations. Transitioning away from chemical pest control to biological, physical, and ecological alternatives protects hedgehog welfare while maintaining garden productivity through a more complex, species-rich ecosystem.

What You Can Do

Eliminate slug pellets from your garden and use physical barriers or copper deterrents instead
Reduce or eliminate insecticide and pesticide use to protect the invertebrate community that hedgehogs depend on
Create compost heaps and leaf piles that support invertebrate populations and provide hedgehog habitat
Plant native species that support diverse invertebrate food chains benefiting hedgehogs and other wildlife