Polypoidal chronic rhinosinusitis & allergic fungal sinusitis are the most famous sinonasal disorders all over the world which resist medical or surgical treatment by its recurrence even after use of new technology "sinoplasty". Recently, steroid nasal irrigation was used giving a promising result including significant improvement without need of surgery & also used post FESS leading to long durated improvement with delay of recurrence. These results overcome the results obtained by classic steroid nasal spray as I noted in my institute with some patients treated by steroid nasal irrigation.