Consumers have long known that discount stores can offer up shopping surprises. But a woman in Salt Lake City said she has buyer's remorse after finding cocaine inside a box of recently purchased tampons.

Cindy Davidson, 39, told police that she bought the box of Boots tampons from an NPS store, which specializes in salvage and freight recovery and sells discounted products in Salt Lake City and online via eBay and Amazon.

However, when she opened the box she said two of the 16 tampons were replaced with a white powder wrapped in cellophane, KUTV reported.

"I didn't look like it was tampered at all," she told KTVX-TV.

According to KUTV, police tested the substance and confirmed that it was cocaine.

NPS officials said they purchase their items from auctions and that they have no clue where the cocaine could have come from.

"Without knowing the customer, without knowing the product specifically on this situation we just have no information to try and figure out where it came from," Stan Alexander, NPS director of security, told KTVX.

Davidson said the whole situation is crazy, and that she still can't believe it.

"I've never seen anything like that, so it was weird," she said.