A U.S. company is marketing a germ-zapping robot as a way to disinfect hospital rooms used by Ebola patients.

The robot made by San Antonio, Texas-based Xenex Disinfection Services uses pulses of powerful UV light to kill bacteria, fungi and viruses, including the Ebola virus. Each unit costs $115,000.

The robot is wheeled into a hospital room and operated when it's empty to disinfect a three-metre radius around the machine.

Company CEO Morris Miller told Fox Business that Xenex's robots are currently used in 250 hospitals across the U.S. and the company is working with charities to provide a discount for hospitals in East Africa.

The robot is in use at the Dallas hospital where the first U.S. case of Ebola is being treated.