A woman got a poisonous bonus prize in her package of red grapes.

"The next thing I know, there was this leg coming up over a grape and needless to say I dropped [the] grapes in the sink," Ybonne Whalen said ABC 27 News reported.

The Pa. woman put the creepy-crawler in a plastic container, and had a bug expert come take a look the following day.

"There's no mistaking a black widow, even in a juvenile form like this. There is just enough there that you can really tell it's a black widow," Ryan "The Bug Man" Bridge told ABC.

Bridge said finding a spider in a bunch of grapes is not entirely "unusual."

Employees at Giant Food Stores even admitted it does occur occasionally.

"A customer alerted us today that she found a black widow spider in grapes she had purchased from our Dillsburg store," Giant said in a statement.

"We regret that this incident has occurred and are taking immediate steps to prevent a similar incident from happening in the future. We will continue to diligently inspect product both at our perishable distribution center and at the store while thoroughly investigating this serious matter with our suppliers."

Earlier this week a black widow spider was found in grapes purchased from a Kroger in Mich, FOX News reported.

"I looked in the grapes and there was a black widow staring right at me," Callum Merry told ABC News, according to FOX.

There were also two incidents last month in which black widow spiders were found in containers of red grapes in a St. Louis Aldi store.

The venom from black widow spiders is believed to be 15 times stronger than a rattlesnake's. The spider's bite can cause " muscle aches, nausea, and a paralysis of the diaphragm that can make breathing difficult," National Geographic reported.

Most people who are bitten make full recoveries, but young children and the elderly are more susceptible to bite-related fatalities.

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