You don’t have to seal the house or shed, significantly speeding up the process. We designed our system, using nitrogen, to deliver a gas-filled foam that envelopes the animals (who are not startled by it) and effectively eliminates the oxygen. The rate at which the animal breathes means they quickly take in the nitrogen and within a minute lose consciousness, leading to anoxia.
This allows groups of animals to be rapidly culled with no unnecessary stress or pain. It is also less stressful for those operating the system and doing the culling. Our NFDS units meet all safety and regulatory requirements.