A sickening new study has revealed that over one in four delivery drivers have taken bites of their customer’s orders.

US Foods just released the results of a survey in which 28 percent of delivery drivers admitted to nibbling on food that they were delivering to customers, and around 54 percent said they’d at least been tempted to take a bite after smelling the order.

“We’re sorry to report that sometimes, impulse gets the best of deliverers, and they violate their sacred duty by taking some of the food!” said the researchers behind the study, which saw them interview 497 drivers from apps such as UberEats, Grubhub, DoorDash and Postmates.

They also found that 21 percent of customers had suspected that drivers had taken a bite out of their food, but that statistic will undoubtedly go up after this study. When asked just how upset they would be to learn that their delivery driver had taken a bite out of their French fries, those interviewed rated their dissatisfaction at 8.4 on a scale of 1 being “no big deal” and 10 as “absolutely unacceptable.”

In addition, the study discovered that an overwhelming 85 percent of customers wanted tamper-evident labels on the food to discourage delivery drivers from tasting their chow before it reaches their door. However, drivers made it known in the study that they weren’t the only ones at fault and that customers had behaved badly as well.

“Of the nearly 500 deliverers we surveyed, topping the list is weak tips, food not being ready at the restaurant, and lack of communication with customers,” researchers said, adding that at least 60 percent of drivers had gotten a bad tip or none at all.

The three day study was conducted by researchers in the hopes of helping restaurants and delivery services better navigate the rapidly growing industry.

“By learning more about what consumers crave in their off-premise dining experiences, restaurant owners and operators can better cater to their customers’ needs while making smarter business decisions,” the researchers concluded.