BLAINE, Wash. (AP) — Federal investigators are looking into a company in northwestern Washington for claiming its products, specifically copper water bottles, can protect people from the coronavirus.

The website invites customers to “experience the benefits of a copper water bottle” with claims that for $32.50, copper water bottles will help keep the coronavirus away, KING-TV reported.

The Federal Trade Commission has sent the company a warning letter ordering them to “immediately stop making (those) claims.”

The news outlet made several attempts to reach CopperH2O, including through email, a California phone number, and through their mailing address, which led them to the post office in the Whatcom County town of Blaine, where no post office box was listed.

The FTC said it has received 240,000 complaints about COVID-19-related products since the start of the pandemic.