The Nox process allows the creation of a modified atmosphere with a high carbon dioxide content leading to total insect mortality.
Following conditioning, the adult insects in free form are eliminated after 48 hours. It is necessary to wait up to 21 days to observe the total mortality of the hidden forms and the earlier forms (eggs/nymphs/larvae, possibly nested inside the grains).
The speed of insect removal depends on several parameters (insect, type of grain, temperature, humidity, gas rate).
The elimination of hidden forms is made possible by the diffusion of carbon dioxide throughout the big bag and inside the grain. Without the injection of carbon dioxide the insect control action cannot take place.
If you are using Nox big bags to disinfect already infested batches, you should include an additional sorting step to remove the remains of dead insects left inside.