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Here's my evaluation of a product called NasalGuard Allergen Gel. Its advertisement states that "NasalGuard is a patented, water-based gel which filters airborne particles that traditionally enter the nasal passages. Irritants such as dust mite allergen, pet dander and mold spore are major causes of sneezing, stuffy noses and more severe allergic reactions. NasalGuard is an electrostatically charged gel that literally acts like a magnet snagging harmful particles before they are inhaled into the nasal passages." This sounds like Chloraseptic Allergen Block, which evaluated here. I undestand how this product so supposed to work. Its been available since about Novemeber 2005. However, there are no published clinical trials that I can find and analyze. So, I can not endorse this product either.