When major storms like Hurricane Florence are on the way, most people start thinking about packing up their belongings and leaving their house. If you find yourself in this situation and want to make sure your food stays good in the refrigerator, we have a trick for you!

If the power goes out while you are gone, your meat and milk will likely go bad in the fridge. If the power returns before you get home, you’ll have no idea it ever went out, and therefore will not know if your food went bad.

Sheila Pulanco Russell recently took to Facebook to explain that all you need to fix this problem is a quarter and cup of water. Simply freeze the water in the freezer and take it out once it’s frozen. Then, put a quarter on top of the cup and put it in the freezer.

Once you have returned home after the storm, if you find the quarter has moved to the bottom of the cup, then you’ll know your food was not refrigerated while you were gone and it’s no longer safe to eat. If the quarter is in the middle, your food is probably fine! If your quarter is still at the top where you left it, it means that the contents of the freezer stayed frozen the entire time that you were gone.

“If you don’t feel good about your food, just throw it out,” Sheila said.

With a major storm coming, people need this trick now more than ever!