@celia16, i use NeilMed sinus rinse with the pre measured packets and the 8 oz squeeze bottle. what you're doing is rinsing out old dry sinus mucus, pollen, maybe some old dry blood and such. please always use room temperature distilled water. no tap water. do not try making your own distilled water. you can not get it as clean as distilled. and if the saline spray works for you. use it in between. i use the rinse twice a day because of the chronic sinusitis. with the saline spray in between. danny