I have owned three Zep professional spray bottles for many years. All three work as they did on the day I purchased them. I highly recommend them and have purchased and given away Zep spray bottles to friends and family. I am not sure of, and question the validity of the other negative reviews. Fyi, they work great as training tools for dogs. On stream, I redirect dogs away from unwanted behavior. Very effective training tool. E.g., bark at someone at our door, after initial bark (which is good for security) I say Quiet, if they bark again, I squirt w water, barking stops. After several trials, Quiet without spraying silences pups.
Rating: [5 of 5 Stars!]