My dog jumped on the bed leaving a large spot with red clay dirt stains on the sheets. Help!
Red clay is a nasty stain to remove. I assume it is dried out by now, so here’s your best shot:
Your best bet would be an extended presoak (1 hour to overnight) in a good powder detergent followed by a hot water wash with detergent and 3/4 cup Clorox® Regular-Bleach₂ with CLOROMAX®. The powder detergent has ingredients called builders, which help extract fine particulate materials like clay. The red clay may not be totally removed with this or any approach. I know this since they use red clay to dye tourist t-shirts in Hawaii, which with repeated washing still have the red/rust color.