A Chinese robotic vacuum cleaner has been revealed to have a range of health problems, including diabetes and high blood pressure.
A recent report published in the US state of Utah claimed the machines could kill as many as 500,000 people a year.
The report, authored by the University of Utah’s Kline Research Institute and the University at Buffalo, said the machines were “unsafe and unsafely capable of causing injury to human beings and pets”.
The robots, which can be controlled by a smartphone app, can be programmed to vacuuming the floors of a house or washing dishes for up to six hours at a time.
The robots are capable of performing tasks ranging from lifting heavy objects, to cleaning toilets and cooking food, to removing mold and fungus.
“These robots are more dangerous than a robot could ever be because they can be very, very, dangerous,” Kline researcher Dr Andrew Loehlin said.
“It’s a lot of pressure.”
Dr Loehrlin said the robots could cause a range or potentially deadly health problems.
“You need to be really careful when you use these robots,” he said.
The researchers said the US Food and Drug Administration (FDA) could have done more to prevent the devices from being sold.
They cited the fact that there was no scientific research to back up the claims made by the Utah researchers, saying the machines had been tested by a laboratory and were in compliance with the US regulatory guidelines.
“We are concerned about these devices,” Dr Luehlin added.
The Utah study, published in July, claimed the robots can cause serious health problems including diabetes, high blood pressures and kidney damage.
However, the study’s authors said that there were no data on the robots health effects, and they could have been designed to avoid serious health effects.
“The FDA has not studied these devices and they do not have the scientific evidence to support the safety of these devices.
So the FDA is not required to be involved,” Dr Thomas Matson, the lead author of the study, told the Associated Press.
He said the Utah study could be viewed as a form of marketing hype.
The US is one of a handful of countries that have not banned the robots, but Dr Loohnlin said it was important to have regulations in place to protect the public from the machines.
“They are not going to be a health hazard if we can prevent them from being used,” he told the AP.
The study also warned that some of the devices could damage human skin or organs if exposed to sunlight.
The devices are being used to vacuaise floors of houses in Utah and other states.
Dr Loomis’ findings have drawn criticism from the White House.
The White House’s National Security Council spokeswoman, Marie Harf, said: “While the president is not a scientist, he has spent his entire career looking at the safety and efficacy of new technology and his scientific research has shown that these products are dangerous.”
She said Mr Trump was “committed to using new technology to prevent and respond to terrorist attacks.”
The Utah researchers said they did not have any safety data to support their claims.
The FDA and the US Centers for Disease Control and Prevention (CDC) have not commented on the Utah findings.
The Centers for Occupational Safety and Health in the city of Salt Lake City said that the robot was not considered hazardous under the Occupational Health and Safety Act.