How to clean a clogged Misto oil sprayer/spritzer?
I generally clear my clogged misters / spray nozzles by unscrewing the spray part from the bottle and then submerging the uptake tube in very hot (but certainly not boiling!) water and then pumping as long as it takes to clear the clog out and start spraying a mist / spray pattern again. The hot water should be enough to break up the clogs, and the pump action should force the clog out.