As we all know, the concentration of disinfectant is necessary to achieve disinfection effect and contact with the virus itself. Therefore, it is required that the concentration of chemical disinfectants sprayed is high enough, and the spraying is uniform and detailed enough to cover all aspects. Only in this way can chemical disinfectants really kill viruses.
However, the spraying disinfection conditions in many areas are limited, and it is impossible to spray with professional disinfection equipment. Therefore, the mail sent from Hubei to Beijing is mostly sprayed manually: disinfectant is prepared with ordinary pesticide spray cans, and then workers spray and disinfect postal vehicles and mail.
It is conceivable that it is more difficult to really kill the virus under such a simple spraying condition. On the contrary, people who spray disinfection only wear masks, goggles, gloves and other facilities, and are easily exposed to a large number of chemical disinfectants during the spraying process, which has adverse effects on the body.
You know, chemical disinfectants can't directly act on the human body in a large area. Spraying a large number of chemical disinfectants may cause eye and skin irritation, aspiration pneumonia, skin inflammation, allergic reactions, etc. It will seriously lead to the recurrence of chronic bronchitis in the elderly and asthma attacks in children.
In fact, spray disinfection is not recommended if you don't have the complete protective device as shown above and wear protective clothing, masks, gloves and other protective equipment.
In addition, these chemical disinfectants can not only kill the virus, but also affect the mail itself, such as corrupting the mail. Some poorly packaged mails may be damaged.