It appears as if it is a common practice to sell refurbished toner cartridges that blow toner all over your printer. HP 1600. I stock extra so that I am not out. Attempted to call the company with order number and their canned response is that they warrant their product for 180 days! Doesn't do me much good to stock in advance if that were the case. I advised that I wouldn't do business with them any more. BE VERY AWARE! History speaks for it's self!