The feds are cracking down in their battle against knock-offs. Fox News’ Adam Housley reports on how buying fake products can be dangerous and costs U.S. jobs.

What Is the "Grandparents" Phone Scam?

Housley visited a warehouse in Long Beach, California where counterfeit products discovered by cops are stored.

More than a billion dollars in counterfeits are seized by Customs and Border Protection annually.

CBP officer Todd Owen said, “With the explosion of the Internet right now you can buy anything that appears to be legitimate.”

Craig Crosby, from, said it’s hard to tell the difference between real and fake, until customers begin to use the product and notice the quality difference.

“Probably the best giveaway is if the price is too good to be true, you’re probably buying a fake,” Crosby said.

NY Giants and Eli Manning to Fight Memorabilia Lawsuit

NYPD, FDNY Retirees Charged With Faking 9/11 Illnesses in Social Security Scam