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Car seats can get wet loads of ways. You might have left your car windows open in a rainstorm, spilled your water bottle all over your car seats, or got your car upholstery shampooed. However it happened, nobody likes sitting on squishy, wet car seats, and your damp seats can start to grow mold if you don’t act fast. Dry up your car seats with towels, fans, a shop vac, and a hair dryer. If you’re left with a lingering mold smell, try a dehumidifier, white vinegar, and baking soda.

Method 1
Method 1 of 2:

Removing Moisture

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  1. If you have a garage, that would be the perfect option to get your car out of the rain. If not, any covered, dry place will do. [1]
    • If you don’t have access to a covered place to park in the rain, then just close the car windows, so no more rain can get in.
  2. Sunlight will help dry your car out, so find the sunniest parking spot possible. Park somewhere that’s likely to be sunny for a while, because it generally takes at least 3 hours to dry out car seats. [2]
    • If it’s relatively warm outside, with intense sunlight, the car will dry more quickly.
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  3. Throw open the doors and windows of your car so that the car can air out. [3] A damp, closed-up car is the perfect environment for mold to grow, and you don’t want that. [4]
    • Open windows will help the moisture evaporate and leave the car.
  4. Press fluffy towels onto the car seats to soak up as much moisture as possible. Lean into the towels with your weight so that they soak up more moisture. [5]
    • You may go through a large stack of towels in this process.
  5. If you happen to have a shop vac, this a great time to use it. Position the vacuum to the “wet” setting, and run the nozzle all over the car seat, so that it sucks up the moisture. [6]
    • If you don’t have a shop vac, get by with fans or a blow dryer.
  6. You should park the car near an outlet, and plug a powerstrip into the outlet. Then you can plug all your fans into the powerstrip, and position them pointing in the open car doors or windows toward your car seats. [7]
    • You should leave the fans blowing for at least 24 hours, but may need up to 48 hours.
  7. You’ll have to park your car near an outlet so that you can plug in your blow dryer. Then hold the blow dryer about 3 inches (7.6 cm) from the car seat and move it back and forth until it dries the moisture. If your blow dryer has multiple heat settings, put it on medium heat to avoid heat damage to your upholstery. [8]
    • A blow dryer shouldn’t be your first tool of choice, because its strong heat can damage the seats. However, if you’ve already tried toweling, sunlight, a fan, and a shop vac, it’s time to give the blow dryer a try.
  8. Make certain your car dries by running a dehumidifier . You can place the dehumidifier on the floor of the car or on the car seat, or you can run it in the garage with all your car windows open. [9]
    • Dehumidifiers work by collecting the moisture that’s floating in the air, and storing it in a tank.
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Method 2
Method 2 of 2:

Getting Rid of Smelly Mildew

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  1. Mildew and mold is made up of little spores that you disturb when you scrub them. Protect yourself by wearing gloves and a mask or a respirator.
    • Put all your clothes into the wash once you’re done scrubbing.
  2. Mix 8 parts vinegar with 2 parts water in a spray bottle and spray the car seats and any other area of your car that’s smelly. Let it sit for about 15 minutes and then vacuum up the vinegar and the mold with a small handheld vacuum, or with the upholstery extension of a regular carpet-cleaning vacuum.
    • The vinegar will help kill the mold.
    • Make sure to use plain white vinegar, and not any other type of vinegar, like cider or balsamic.
  3. Baking soda is a highly effective deodorizer. It will take away the scent of the vinegar and any lingering scent of mildew. Coat the seats in a thin layer of baking soda. Let it sit for about 15 minutes and then vacuum it up with a handheld vacuum or the upholstery extension on a regular vacuum cleaner.
    • You may need to use several boxes of baking soda.
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Expert Q&A

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  • Question
    How do you get car seats dry when it's cold out?
    Chad Zani
    Auto Detailing Expert
    Chad Zani is an Auto Detailing Expert based in Los Angeles, California. He is the Director of Franchising at Detail Garage, an automotive detailing company with locations around the U.S. and Sweden. He and his team are auto detailing experts that offer detailing and car care services.
    Auto Detailing Expert
    Expert Answer
    Recline the car seats all the way and open the windows about 1/4 inch or so. Then, turn on the heat cycle in the car. The hot air passing over the car seats will help dry them out.
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      Things You’ll Need

      Removing Moisture

      • Absorbent towels
      • Shop vac on “wet” setting (optional)
      • Power strip
      • Fans
      • Blow dryer
      • Dehumidifier (optional)

      Getting Rid of Smelly Mildew

      • White vinegar
      • Water
      • Spray bottle
      • Baking soda
      • Handheld vacuum cleaner (optional)
      • Upholstery extension of regular vacuum cleaner (optional)

      Tips

      • If your car still stinks of mildew after trying to clean it out, you may want to go to a professional car wash or an auto detailer and ask for their help.
      • If you don't have a garage with outlets, ask a friend if you can temporarily use their garage to help you dry out your car.
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        Dec 29, 2022

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