Insect farming is growing rapidly as a sustainable protein source. The question of whether insects can suffer and what welfare standards are appropriate is actively debated among scientists.
Insect welfare sits at the frontier of applied animal ethics. Given genuine scientific uncertainty about insect capacity for suffering, the precautionary principle suggests that avoiding gratuitous harm is appropriate even without certainty. If insects do have any capacity for aversive experience, farming conditions including extreme crowding and killing methods that cause prolonged dying (hot water immersion, for example) could cause significant aggregate suffering given the enormous numbers involved. Rapid killing methods like freezing at very low temperatures or electric stunning may reduce any potential suffering. Welfare-conscious insect producers are beginning to address these questions in their production protocols.