Before picking your preferred method of cleaning the salt stains in your car's interior, you should start by loosening up any salt on the surface
Grab a nylon brush or an old toothbrush, and use it to lightly scrub out any dried salt on the surface. After you feel like you have agitated most of the salt, proceed by using a wet dry vacuum to pick up all the dirt that might have come up while using a brush. Keep that vacuum in handy for sucking up moisture after using a cleaning solution.
Vinegar and water solution in a spray bottle
Vinegar is a natural cleaning agent that can help you with many cleaning tasks. It is also very useful for removing white stains from salt.
To make a vinegar solution, mix equal parts white vinegar and water in a spray bottle. If you are going to use this method, make sure to remember that white vinegar leaves a very strong smell behind remove salt stains from seats. If that will bother you, refer to other methods or put your windows down to air out the vehicle.
