Use your hand to feel around in places you can’t see. Kill any mold you find with 2 cups (470 ml) of vinegar mixed with 1 cup (240 ml) of water. Leave it on the mold for 30 minutes before wiping it clean. [2] X Expert Source NW MaidsHouse Cleaning Service Expert Interview. 28 August 2019.

Let the automobile sit in the sun with the windows rolled down to dry out. Brush away any loose mold from the upholstery.

Use an odor remover spray to treat your car’s A/C every year. Spray the odor remover into the A/C vents to eliminate odors caused by stagnant water, bacteria, and mildew. [4] X Research source

Put the granules in a waxed cardboard container that has perforated holes. Place the container in an enameled pot to collect the liquid that drips away from the container. Leave the pot in the automobile until only liquid is let in the container and then refill it. Take care while handling calcium chloride and dispose of it properly after use.

Do not over saturate the area with air freshener. If you do, blot the area dry.

Remove any stuck-on grim or substance with a putty knife or spatula. Mix two tablespoons of laundry detergent with eight ounces of water into a spray bottle, and get the affected areas wet. After allowing the cleaning solution to set for a few minutes, begin blotting up the area by padding it with a white wash cloth. Soak up the remaining moisture with a shop vacuum when done.

Call around to your nearest car care professionals to ask about pricing. This service could be expensive.

Wipe up any spill immediately. Remove wet floor mats and allow them to air dry before returning to the car. Allow the automobile to replenish stagnant air with fresh air by leaving the windows down.

Consider a professional cleaning for major saturation. [10] X Research source

Roll your car windows down occasionally to allow new air to flow in. Keep up with annual A/C maintenance.