Insect Farming Welfare Considerations

Insect farming for food, feed, and other products is expanding rapidly, and questions about insect sentience and welfare are increasingly relevant to how these operations are conducted.

Key Facts

Global insect farming produces over 1 million tonnes of insects annually for food, pet food, and animal feed.
The scientific evidence for insect sentience remains uncertain, but some evidence of nociception exists in several orders.
Temperature, humidity, crowding, and substrate quality all affect insect survival, reproduction, and behaviour in ways that may be welfare-relevant.
Mealworms, black soldier fly larvae, and crickets are among the most farmed insect species with different tolerance profiles.
Killing methods for insects include freezing, grinding, hot water immersion, and CO2 — methods whose humaneness is poorly evaluated.

Welfare Considerations

Insect farming at scale means that even a small probability of insect sentience implies enormous potential welfare stakes, given numbers involved. The precautionary approach — taking welfare seriously before certainty is established — is gaining traction in welfare science and is beginning to influence farm practice and regulation. Providing appropriate substrate, maintaining optimal temperature and humidity, and using rapid killing methods represent low-cost precautionary welfare measures that the industry can adopt proactively.

What You Can Do

Support insect welfare research through organizations including Rethink Priorities and the Insect Welfare Research Society.
When purchasing insect-based products, consider whether the producer applies welfare guidelines to their operations.
Engage with the ethical debate around insect sentience to form an informed view on this emerging welfare frontier.
Advocate for research funding for insect welfare science to improve the evidence base for future regulation.