I have tried two bottles. Both had the same problem. The spray nozzle stopped working after 20-25 pulls of the trigger. I transferred the liquid to my own sprayer. It worked better, but, it also stopped working. I took my nozzle apart and found it clogged with a white substance that resembled dissolved toilet tissue. This needs to be removed after a few minutes of spraying. The lot number is NT57FX5772 It is my recommendation that this lot be removed from all store shelves and research be conducted as to the cause of this problem. It is my belief that it is not an isolated problem.