If you can remove the nozzle, try soaking it in vinegar for a bit. My pump sprayer nozzle clogs up every year too.Dadgummit! My new battery powered sprayer isn't spraying. I hear the pump run, but nothing's coming out of the hose, even with the nozzle removed. I'm topping off the battery in case it was getting weak, but somehow I don't think that's the problem.