Good morning, I would like to ask about the safety of using rinses such as Irigasin or Sinus rinse. One ENT recommended that I rinse my nose daily for 3 months before nasal septum surgery. In turn, another ENT specialist criticized the first one, saying that he probably forgot what is the anatomy and physiology of the sinuses. He warned against this, he said that such products are a marketing advertising scam, and besides, very harmful - because there is no possibility of rinsing the sinuses at home, you can harm yourself by pouring unsterile water into the auditory tubes and middle ears. It is as if a diving swimmer suddenly got dirty, cold water into all the sinuses, that is, in the area of the meninges, brain, eyeballs and middle ears. Not only could these areas become infected, but they could cause dizziness, vomiting and drowning. I also heard reports from other patients who, after using such rinses, began to have tinnitus or chronic headaches, ears. Please advise - is it safe to use such products?