No. According to a query on Oriental Medical Equipment Network, Renhe electric nasal washer can be used for 5 years. The electric nasal irrigation device uses mechanical pressure to send physiological saline into the nasal cavity. With the help of the bactericidal effect of the physiological saline itself and the impact of the water flow, the pathogenic substances and dirt in the nasal cavity are discharged, thereby restoring the normal physiological environment of the nasal cavity. Restore the self-cleaning function of the nasal cavity to achieve the purpose of protecting the nasal cavity.