As insect farming scales up to produce food and feed for billions of animals and humans, the welfare of trillions of farmed insects presents profound ethical and scientific challenges.
Insect welfare sits at the frontier of animal welfare science, combining profound uncertainty about sentience with scales of production that make the stakes enormous. If insects are sentient — even modestly so — then the welfare implications of trillions farmed annually under potentially stressful conditions would dwarf all other farmed animal welfare concerns combined. If they lack sentience, welfare considerations may be minimal. The honest position is scientific uncertainty: current evidence neither confirms nor refutes insect pain experience. Given this uncertainty, the welfare-consistent approach applies a precautionary principle: prefer killing methods likely to minimize suffering if sentience is present (rapid freezing or CO2 rather than live shredding), avoid extreme stocking densities that cause physical trauma regardless of sentience, and invest in research to reduce uncertainty about insect cognitive capacity.