PITTSBURG, Calif. -- A Bay Area mother is telling KTVU about a stomach-churning discovery she made Tuesday night when she claims to have found maggots in not one but two jars of baby food as she was preparing to feed her infant.

The family lives in Pittsburg, but the mother says she bought the baby food at a Target store in San Ramon. The parents are saying the problem was with two jars of Gerber brand food.

It was dinnertime Tuesday night when mother Denetra Tims went to the cupboard for a jar of baby food to feed her 8-month-old daughter Nyla. That's when she says she made a sickening discovery.

"I went to pull it out and then I looked at it and I was like, what is that? And I just thought it was a piece of something on there," says Tims. "And I just saw a little squiggle and I was like 'Oh my God. That's a maggot.'"

Tims showed KTVU the jars, now wrapped tightly in a bag. Right around the lid of the Gerber's sweet potato and turkey baby food, you can see the white wormy shapes of maggots snugly nestled underneath the plastic seal.

"So you could see it stretching out and moving back. I was just totally disgusted," explains the disturbed mother.

Her husband had the same reaction: "It was very disgusting seeing the maggots, especially right next to your baby," says Shawn Tims.

He said he'd just fed his baby girl Gerber baby food from a different jar the night before, which only added to his consternation.

"I'm thinking 'Did she possibly eat one? Was there one in her food?'" says the little girl's father.

They immediately checked the other bottles they had to see if there were more maggots.

"And I pulled out the last one and it had two on them. So two bottles out of the four [had maggots]," says Tims.

The Tims showed KTVU the cash register receipt from the Target store in San Ramon. It indicates they bought it a week ago on January 3rd. Shawn Tims says he called the Gerber company and says the operator told him Gerber wasn't to blame.

"She said it probably happened during the distribution or the stocking of the actual store," explains Tims.

But hours later, Gerber called back to say they would send someone out to inspect the bottles and get the tracking number to trace the problem.

"There's other people that I'm sure have bottles that could be in the same conditions, not even here but in other places as well," says Tims.

The Tims say they just want their money back and hope someone will figure out what happened. They also have words of advice for other parents:

"Definitely make sure you look at your packaging first before you buy anything, because obviously they don't check it."

KTVU contacted Gerber but have not received any response. Members of the staff at the Target store where the baby food was bought say they're not allowed to respond on camera, but say they would be glad to work with Gerber and give the Tims a refund.