Washable marker my butt...

Long story short 8 year old wrote on 3 pairs of *brand new* jeans with a red marker at school. He said he didn’t think it was a big deal since the markers say they’re washable.

I didn’t see the marks until I went to wash clothes yesterday because he changed into workout clothes for kickboxing immediately after school. Now I can’t get the marker out. I’ve washed them twice. Never put them in the dryer. I normally don’t use stain removers because I’ve found that just spreading a little regular detergent directly on stains, then washing, works just as well if not better. But it’s not cutting it on this marker. Any suggestions?