Gordon Ramsay Gordon Ramsay

The next time a hotel offers you an upgrade, just say no. Why? Let's just say they're never as clean as they look, according to Gordon Ramsay.

"If [hotels] suggest they will upgrade you to the honeymoon suite, don't take it. I'm trying to be serious because it is somewhat shocking," the Hotel Hell star told reporters at Fox's Television Critics Association fall TV previews Monday, before adding: " I just didn't think it could shoot that far."

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"I'm talking about if you shake a can of Coke and open it," he quipped without missing a beat.On the new reality series — Ramsay's fourth for Fox — the foulmouthed restaurateur and his team of hospitality experts travel cross-country to revamp struggling motels, hotels and bed and breakfasts.  And "struggling," for the most part, means unhygienic. Ramsay said he and his crew visited one boutique hotel where they found a duvet cover that hadn't been cleaned in 18 months."I don't think common sense becomes that common in those scenarios. It's so obvious what's wrong," he said. "A dentist's office is immaculate. Kitchens and hotels should be exactly along those lines. The biggest worry ... was the state of the pillowcases. Flash a black light on there for 30 seconds, and I was literally horrified. ... . I didn't go in there to create havoc. I went in there to [make them take responsibility]."

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In doing so, Ramsay's notorious hotheaded ways will be front and center on

Hotel Hell — and he believes more of that temperament is necessary if we want hotel hospitality up to par. "I don't think as a nation we complain enough. You go into a boutique, try on clothes [that don't fit], you take it off and you don't pay for it," he said. "I think in restaurants and hotels, it should be exactly along those lines. ... We need to complain and demand our money back. In order for the industry to get better and the hospitality sector to raise its game, we need to complain more."Hotel Hell premieres Monday, Aug. 13 at 8/7c on Fox.