Nasal irrigation, known as nasal lavage, is the procedure wherein the nasal cavity is flushed out to clear it of excess mucus and debris. It is often done with a saline solution delivered by a spray or nebulizer to moisten the membranes.
Regular Websites
Consists of an article about sodium chloride sprays in general, what conditions they treat and other useful information including cost and warnings. - Deep Sea Nasal Spray
http://www.revolutionhealth.com/drugs-treatments/deep-sea-nasal-spray
Ear, Nose and Throat Disorders
Discusses nasal irrigation for relief of various ENT problems including details about how it works, unproven uses, potential dangers, and resources. - Ear, Nose and Throat Disorders
http://www.intelihealth.com/IH/ihtIH/wsIHW000/35263/35275/358834.html?d=dmtContent
Nasal Lubricants and Irrigations
Drugs.com maintains this list of nasal irrigations and lubricants along with user reviews and ratings and contraindications. - Nasal Lubricants and Irrigations
http://www.drugs.com/drug-class/nasal-lubricants-and-irrigations.html