Can I refill my laser toner cartridge? We do not recommend using the refill kits for toner cartridges. The most important part in the laser toner cartridge is the drum. When we remanufacture the laser toners, we always replace it with the new drum. You might also need to change other parts of your laser toner for satifactory results. Since refilling a laser toner is a messy process and involves changing parts, we don't sell refill kits for laser toners.