Paper or plastic?

Tahisha Wilson prefers plastic bags to anything else. "Just for convenient reasons. I just like the plastic more because I just throw them away," said Wilson.

Maybe you're trying to be "green" and use the reusable shopping bags. After all, you can find so many uses for them.

Johnathon Carrizales said, "I brought my lunch in it today. When I make a short trip back home to Gonzales, my hometown, I'll pack my clothes for one day, and I'll use my green bag for that."

How long have you been using them? "Oh, for a long time, since I'm from Germany and we have to pay for any plastic bag at the store," said Anja Schwalen. She is a long time user of the reusable grocery bags.

Have you ever washed or sanitized them? "I sometimes throw them in the wash, but not very often," Schwalen admitted.

"No, I've never washed it. I never have," said Carrizales.

Maybe you should wash them. A recent study found the reusable grocery bags can serve as a breeding ground for dangerous food-borne bacteria because 97 percent of the people using them weren't keeping them clean.

Carrizales said, "People put chicken in there, their juices and meats, blood's leaking out of there and I just packed my lunch in it, so now I'm like, 'do I want to eat this or not?'"

Bacteria levels found in the bags tested were significant enough to cause a wide variety of serious health problems and even death. So, will this change your shopping habits?

"I'm going to go home and wash it when I get home, I tell you that, that and the other four we have at the house," said Carrizales.

As for Schwalen, "I'm going to wash them more often; so far, nothing's happened to me," she said.

Knowing what you know now, Is that a gamble you're willing to take?