It is the complex measures to exterminate or reduce of harmful rodents. The purpose of deratization can be preventive measures or repressive measures.
Desinfection is the complex of measures aimed at destruction of disease-causing (pathogenic) or other harmful microorganisms in the environment, so they can not further spread of infectious diseases in human and animals.
Disinfestation is the package of measures aimed at the destruction of harmful or nuisance insects. Very important is the hygienic point of view, that they can transfer some significant disease or they can harm to store products or devices, etc.