Many complementary health approaches have been studied for seasonal allergies (also called allergic rhinitis or hay fever). There’s evidence that a few may be helpful. 

• Rinsing the sinuses with a neti pot (a device that comes from the Ayurvedic tradition) or with other devices, such as nebulizers or spray, pump, or squirt bottles, may be a useful addition to conventional treatment.  
• Studies of acupuncture indicate that it may be helpful. 
• Some studies of probiotics have had promising results, but the overall evidence on probiotics and allergic rhinitis is inconsistent.