The I'm A Celebrity... Get Me Out Of Here! hosts told The Sun that despite McKeith's claims, they don't think she will quit the show.
"She might be having a tough time but she won't quit," Ant said. "She knows what she's doing. I think she's even enjoying it."
Dec commented: "She definitely has a game plan and probably thinks she can win. The biggest surprise was what a scaredy cat she was."
Ant, who has just celebrated his 35th birthday, added: "She can handle people's poos and analyse them but she's scared of a cockroach."
He confessed that he was pleased with the lineup the show has secured in its ninth year.
"The contestants have such big personalities" he said. "There's a really good cast this year. You've got Shaun, one of our musical heroes from growing up. You've got a Playboy bunny.
"I could go on but I'm quite happy after those two!"
I'm A Celebrity... Get Me Out Of Here! continues tonight at 9pm on ITV1.
> Gillian McKeith faking I'm A Celeb panic?