Instruct: Classify a given Amazon review as either positive or negative.
Query: If you want a giant mess on your hands, this is perfect

Decided to replace working generic (but fading) cartridge with an official TN-350 Brother cartridge for my beloved Brother laser printer. There was some toner loose in the cartridge bag, which I took as a bad sign, but I HAD to print out postage for a customer package this morning.Big mistake - after I followed their directions to replace the cartridge and tried to print, nothing happened. I opened up the printer to find that toner had POURED out all over the inside of the printer, the table, the floor, the sheaf of expensive paper inside. It'll cost hours that I don't have to clean it all out, if if even can be cleaned completely. The paper is ruined regardless. My customer is going to be very unhappy about the delay.Manufaturing defects are completely unacceptable for any cartridge, much less an expensive one like this.Lesson learned: Buy generic. At the very least, it can't be any worse, and may be much better.