Neti pots are used by tilting the head to one side and placing the pot's spout in the upper nostril while breathing through the mouth. Once that has been done, the user should gently pour the solution through the nose, according to Healthline.
Nasal irrigation should be done with a saline solution, according to Healthline. The solution can be a homemade mixture of water and kosher salt, or there are commercial products the user can purchase. It is important that the solution be sterile because otherwise a life-threatening illness can occur. People who make their own saline solutions can boil the water to make it sterile or purchase sterile water. The neti pot should also be thoroughly cleaned and dried between uses to prevent infections.
Neti pots are used to treat congestion due to allergies or minor infections, reports WebMD. Nasal irrigation is basically safe, but it should not be used on infants or small children. It also should not be used when there are no symptoms, because it strips away protective layers of mucus. It is best to use the neti pot over a sink or tub, because the water pours out of the lower nostril. Some liquid may also run into the user's throat. If this occurs, the user should spit the water into the sink.