What is Electrostatic Spraying? 

@@travisking4390 they use it in farming as well. It technology has been there for 25 years. Nothing new

The droplets are negatively charged, as the spray acquires electrons which can ONLY have a negative charge.

hello buddy wassup

Not every surface is positively charged, but charge can be induced in an electrically neutral objects. Such neutral objects contain roughly equal amounts of positive and negative charges. When a negatively charged object is brought close to a neutral object, electrons (which have a negative charge) on the neutral object are repelled away to the other end. This causes the far side of the neutral object to gain a momentary negative charge, and the side facing the negatively charged object to gain a momentary positive charge. If we now connect the once-neutral object to the ground, which acts like a big conductor, the electrons can travel out from the object, and the once-neutral object is now positively charged. *By momentary, I mean that if ungrounded, the object will return to being electrically neutral once the negatively charged object is removed. As long as the negatively charged object is there, a charge will be induced on the once-neutral object.