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This article originally appeared on Hello Giggles

During Hurricane Matthew in 2016, a viral social media post gave an important tip for anyone who has to evacuate their home as a hurricane approaches.

Lumberton, North Carolina resident Shiela Pulanco Russell posted the following message to Facebook about a neat trick that can help you figure out whether or not the food in your fridge went bad during the storm.

If the quarter has fallen to the bottom of the cup, then it's a sign that the food in your freezer defrosted and then refroze while you were gone, so it's probably a good idea to toss it.

WATCH: The Best Foods to Stockpile for an Emergency

Hurricane Matthew left heavy flooding and property damage when it passed over the Caribbean and several Southern states — North and South Carolina, Georgia, and Florida.