Here's how many delivery drivers admit to nibbling your food before they hand it to you

Food delivery app services have grown tremendously in recent years as more and more Americans seek to order food via their phones, but a survey about the behavior of delivery drivers might give them pause.

The survey from US Foods about "habits and pain points" of delivery drivers found that more than one in four, or 28 percent, admitted to tasting a food order before delivering it to their customer.

The study was made of 1,518 American adults who had ordered food delivery apps, and also of 497 American adults who said they "identified as having worked as a deliverer for at least one food delivery app."

Not only have more restaurants begun their own delivery services as an option to customers, but third party deliver apps allow customers to order delivery from restaurants who don't offer it on their own.

Another, although much smaller, problem found in the survey was 17 percent of delivery app users who said their driver simply left their food on their front stoop without handing it off personally.

A majority of customers, 58 percent, said that they would like to see "tamper-evident labels" to prevent their delivery drivers from joining in on their meal.

Here's the latest on food delivery apps:

Why Food-Delivery Apps Could Leave Restaurants Footing the Bill | WSJwww.youtube.com