As she started washing the grapes, she saw a black spider crawl out and approach her finger.
She jumped away and tried to wash it down the drain, but that only irritated it.
"So I reached under the sink and poured bleach all over it and the grapes," she said. "That seemed to kill it, so I put it in a plastic container and tightened down the lid."
Cline then noticed a red hourglass on the spider's abdomen, the telltale sign of a black widow.
"It was really scary," she said
She said she learned that a female black widow can have venom 15 times stronger than a rattlesnake's, the report said.
One bite from a black widow can cause severe abdominal pain, nausea, vomiting and, rarely, death.
On Tuesday, Cline took the dead spider to Mariano's Fresh Market in Arlington Heights. She was given a refund, new grapes and a gift card for her trouble.
