Guarantee: All compatible toner cartridges are unconditionally guaranteed, when as directed, to perform to your complete satisfaction for a period of one year. We will replace the defective cartridge or give a refund once the defective cartridge is returned with test copies to our facility. We will coordinate the return of a defective cartridge at our cost by UPS ground, ARS Labels (return freight on a defect cartridge is no charge). All returned defective cartridges must include a copy of the defect. (If possible). We will not be liable for printer malfunctions related to manufacturer’s defects or misuse or abuse by users. We will replaced all remanufactured toners within 60 days.