Effectiveness of Mometasone Nasal Irrigation for Chronic Rhinosinusitis

Inclusion Criteria: 12-weeks or longer of two or more of the following signs and symptom consistent with CRS: * mucopurulent drainage(anterior, posterior, or both) * nasal obstruction (congestion) * facial pain-pressure-fullness * and decreased sense of smell AND inflammation documented by one or more of the following findings: * purulent mucus or edema in the middle meatus or ethmoid region * radiographic imaging showing inflammation of the paranasal sinuses. Exclusion Criteria: * inability to speak or understand English * nasal polyps * history of nasal or sinus surgery * comorbid mucociliary conditions * dependence on prolonged corticosteroid therapy for comorbid conditions, such as asthma and chronic obstructive pulmonary disease * history of oral or systematic antibiotic use in the past 2 weeks * history of allergy to MF or other topical steroids * pregnant or breastfeeding * participants with a baseline SNOT-22 score of 9 or less will be excluded due to inability to achieve a minimally clinically improved difference pre- and post-intervention.