Best way to clean baseball uniform red clay stains?

Question

I use Spray-n-Wash Dual Power, but that doesn't always get the pants back as white as I'd like.

Answer 1

Make a past of table salt and vinegar.  Place it over the stain and rub.  Leave the paste on for 15-20 minutes then launder as usual.

The vinegar smell will disappear after they have been washed.