No one wants to visit a fast-food chain with a grubby dining room and unknown germs lurking in the kitchen.

People across America are skeptical of many fast-food chains’ abilities to meet basic standards of cleanliness. So, Business Insider asked more than 3,000 people who read our fast-food coverage which chains they believe have the cleanest restaurants.

To avoid penalizing smaller regional chains, we crunched the numbers to create a score based on the percentage of people who said they visited a chain in the last six months and who said the brand had the cleanest restaurants. While the data collection wasn’t super scientific, it quickly revealed which fast-food chains customers believe to be the cleanest.

Read more: The 7 fast-food chains with the best service in America, according to customers

Few customers were willing to vouch for most fast-food giants' cleanliness. In the case of most chains - including McDonald's, Burger King, and Subway - fewer than 10% of respondents said that they believed the brand had the cleanest restaurants in the industry.

However, a handful of chains stood out. Here are the eight fast-food chains with the cleanest restaurants in the industry, according to customers.


8. Five Guys

Foto: sourceHollis Johnson/Business Insider

10% of people who had visited Five Guys in the last six months said the brand had the cleanest restaurants.


7. Whataburger

Foto: sourceHollis Johnson/Business Insider

11% of people who had visited Whataburger in the last six months said the brand had the cleanest restaurants.


6. Chipotle

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15% of people who had visited Chipotle in the last six months said the brand had the cleanest restaurants.


5. Culver's

Foto: sourceCulver's / Yelp

20% of people who had visited Five Guys in the last six months said the brand had the cleanest restaurants.


4. Panera Bread

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21% of people who had visited Panera in the last six months said the brand had the cleanest restaurants.


3. Starbucks

Foto: sourceTed S. Warren/AP Images

27% of people who had visited Starbucks in the last six months said the brand had the cleanest restaurants.

Read more: Starbucks is installing needle-disposal boxes in locations across America following OSHA penalties and worker concerns about drug use in bathrooms


2. In-N-Out

Foto: sourceHollis Johnson/Business Insider

30% of people who had visited In-N-Out in the last six months said the brand had the cleanest restaurants.


1. Chick-fil-A

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55% of people who had visited Chick-fil-A in the last six months said the brand had the cleanest restaurants.