A Chinese city has added firepower in its fight against the coronavirus — deploying a pair of remote-controlled mini-tanks on spraying missions, according to a report.

The unmanned vehicles — which crawl throughout Taiyuan in central China’s Shanxi province — at a snail’s pace of 2.7 mph but can sterilize 540,000 square feet with disinfectant every hour, according to Fox News.

“We began using them for disinfection and disease prevention” said Hou Yongfei, deputy secretary-general of the Shanxi Province Unmanned Vehicle Association, the outlet reported, citing AsiaWire.

“They were used to disinfect prisons and other high-security environments. Now, twice a day, we send them into gated communities where there have been confirmed cases,” he said.

“We’ve found during the recent outbreak that this allows for zero contact, as the vehicles are controlled remotely,” Hou added.

The hybrid machines, which are powered by both gas and electricity, each carry up to 52 gallons of disinfectant and can spray it to a height of up to 26 feet, the Daily Star reported.