The Nintendo Switch will land in millions of living rooms on Friday when the Japanese company’s latest video game console is released to the general public, but there’s one piece of advice players should know about: don’t lick the games.

The game cartridges, according to reviewers who have received the console early, taste revolting. The taste is a sour, lingering flavour that results from being covered in denatonium benzoate, a “bittering agent” coating that is one of the most disgusting chemicals known to man.