As insect farming scales globally to meet protein demand, questions about insect welfare — including stocking density, slaughter methods, and living conditions — are gaining scientific and regulatory attention.
The welfare status of insects remains scientifically uncertain, but the precautionary principle suggests that as the probability of sentience exists and the number of individuals farmed is enormous, the expected moral weight may be significant. Farmed insects are subject to conditions — extreme crowding, slaughter by grinding or boiling — that would be considered unacceptable for vertebrates. Welfare improvements in insect farming (temperature optimization, cold stunning, substrate enrichment) are low-cost relative to scale and align with precautionary ethics. As scientific evidence develops, farming practices should adapt.