On Friday, the manufacturer of Lysol and other cleaning products issued a statement urging people not to consume the products in any form.

“We must be clear that under no circumstance should our disinfectant products be administered into the human body through injection, ingestion or any other route,” the company, RB, said.

Bryan, who is the senior official performing the duties of the undersecretary for science and technology for DHS, gave a presentation during the press conference on experiments testing how solar light affects the coronavirus on surfaces and in the air. Higher temperatures and humidity may kill the virus more quickly, Bryan claimed.

He warned, however, that “it would be irresponsible for us to say that we feel that the summer is going to totally kill the virus. ... That’s not the case.”

Bryan added that these new observations about the virus’ interactions with light should not take away from the coronavirus guidance set by the Centers for Disease Control and Prevention.

Other health officials on the coronavirus task force were wary of Trump’s suggestions about using light to kill the virus.

When Trump asked whether sunlight and heat could “cure” the virus, task force coordinator Dr. Deborah Birx said no.

“Not as a treatment,” Birx told Trump. “Certainly, fever is a good thing. When you have a fever, it helps your body respond. But not as … I’m not seeing heat or light as…”

Trump interjected, saying it would be “a great thing to look at.”

Earlier this month, Dr. Anthony Fauci, the top U.S. infectious disease expert, acknowledged that warmer weather does affect other viruses, but he warned that it wasn’t the solution to the pandemic.

“One should not assume that we are going to be rescued by a change in the weather. You must assume that the virus will continue to do its thing,” he told ABC’s “Good Morning America” on April 9. “If we get some help from the weather, so be it, fine. But I don’t think we need to assume that.”

Other leading infectious disease experts gave a similar warning.

In a letter to White House science and technology officials this month, the National Academies of Sciences, Engineering, and Medicine said warmer weather wouldn’t lead to a significant reduction in the spread of the virus without “major public health interventions.”