Principle of killing red spider by cold fog machine

The principle of cold fog machine to kill Starscream is suffocation. The cold fogging agent is heated to a steam state, and the steam is mixed with the pesticide through a patented nozzle. Steam mixed with pesticides is sprayed into the air for cooling and condensed into ultrafine particles of about 3 microns. Under the action of UAV wind field, ultrafine particles hit the ground and leaves with pesticides and bounced back to the leaves and branches, and the pesticides were evenly sprayed on each branch. Change the dilemma that drones can't hit the back of leaves.