Alfos — insecticide-fumigant in tablets. The preparation contains aluminum phosphide at a concentration of 560 g/kg. The product is intended for use on grain crops stored in ship hold compartments. It is used to protect against insects and other pests capable of damaging grain reserves during transportation. Alfos is applied as part of a comprehensive approach to ensure the preservation of grain crops during storage and transport. The product is effective due to its ability to rapidly disperse into the air and affect insects located in enclosed spaces.