Use Recycled/ Remanufactured Printer Ink and Toner Cartridges or Simply Refill your empties.
It costs much less than buying NEW and keeps the empty ones out of the landfill sites, printer cartridges are completely made of non-biodegradable products and contaminate the ground around it.
It takes almost a litre of oil to make a new Toner Cartridge. And can take almost 450 years to decompose, Some components, made of industrial grade plastics will take over a thousand years to decompose in a landfill site.
If we reuse and refill these cartridges, which actually have nothing wrong with them, except that they are empty, then we can reduce the demand for newly manufactured and imported printer cartridges, and keep our environment clean from these harmful products...