Do you keep your sunglasses in the car? You might want to take them out until it warms up in Wisconsin.
Just like with extreme heat, you shouldn’t leave certain things in your car during subzero weather. Freezing cold temperatures are expected to resume in the state next week, according to the National Weather Service (NWS).
More: How to protect your pipes from bursting as Milwaukee temperatures dip below freezing
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Here are six items you shouldn’t leave in your car when it’s freezing outside:
Aerosol cans
Extreme temperatures can cause aerosol cans to “become unstable” and potentially break or explode, according to Capital One Auto Navigator.
Canned beverages and foods
Canned goods that freeze can present health risks, according to the U.S. Department of Agriculture. The USDA says cans can swell if the food inside expands when its frozen — or because of a bacteria — so you should discard them.
Cans that are not swollen but have thawed out are also unsafe and should be discarded, per the USDA.
For more information on canned food safety, click here.
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Beverages can also expand inside their containers when frozen, leading to cracks or breakage, according to Capital One Auto Navigator.
Eggs
Eggs should not be frozen in their shells, the USDA says.
“If an egg accidentally freezes and the shell cracked during freezing, discard the egg,” the agency said on its website. “Keep any uncracked eggs frozen until needed; then thaw in the refrigerator.”
Electronics
Leaving electronics, like your cell phone or tablet, in a freezing car can impact how they function, USA TODAY reported.
Some manufacturers — like Apple and Samsung — recommend you don’t expose products to extreme temperatures at all, since most devices work best when used at temperatures above 32 degrees.
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More: How to keep your tech protected from frigid temperatures: Video tutorial
Glasses
Glasses left in a cold car can cause any plastic on the frames to “become brittle” and potentially break, according to Capital One Auto Navigator.
Medications
Medicine is another item that should not be frozen.
When medications do freeze accidentally, there’s no visual indicators that they’re still safe to take, according to Springfield, Massachusetts-based Baystate Health.
“So even if you thaw it out, it’s best to get it replaced than to take the risk that it’s ineffective or even dangerous,” the health system said on its website.
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In general, any liquid medication in a “suspended state” will likely be negatively affected if its frozen, according to the AARP.
The AARP recommends reaching out to your provider or pharmacist if you have questions on your medication’s storage.
Robert Allen and Cody Godwin contributed to this report.
More: How do Wisconsin meteorologists calculate wind chill, and what does it mean?
This article originally appeared on Oshkosh Northwestern: Wisconsinites: Don’t leave these 6 things in a freezing car
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