Waste toner bottles are essential for the functionality of any laser printer. At Premier Toner Cartridges, you can find a large selection of waste toner bottles for printers from Lexmark, Canon, HP, Kyocera, and more. Waste toner bottles catch excess toner residue that can remain on the drum of your laser printers to help preserve print quality. You need to replace them from time to time as excess toner begins to build up inside of them. They are essential for proper maintenance of your machines.