Most dryers have a life expectancy of about 13 years, which can be greatly reduced without the proper care and cleaning of your appliance. In addition to regularly cleaning out your lint trap, the vents and the outside of your appliance, occasional stains will appear on the inside of the dryer that require your attention. One of the more common stains to appear with regular use is the blue dye that comes from drying wet blue jeans in your dryer.
Turn the dryer on and allow it to run for 20 minutes before attempting to remove any stains. Unplug the dryer from the outlet, but do not allow the dryer's tumbler to cool.
Moisten a dryer sheet and wring out well, until it is barely damp. Run the sheet over the stains lining your dryer drum. Replace the dryer sheet with a new one when it becomes discolored.
Repeat this process as needed until the dryer sheet no longer shows any signs of discoloration.
Fill a bucket halfway full with 1 cup vinegar, 1/2 tsp. of dish detergent and water. Dip a microfiber cloth into the solution, and wring out well. Go over the dryer drum several times, rinsing out the cloth in the detergent solution several times while cleaning it.
Empty the bucket and rinse both it and the cloth out well. Fill bucket with warm, clean water.
Go over the dryer again with the microfiber cloth and warm water, removing any soap residue and making sure to get in the corners and against the sides of the dryer protrusions.
Dry drum well with a soft, lint-free cloth and plug back in for use.