I often find skid marks in my girlfriend's panties

You mean she’s like a normal person? No way??

Like, shit skid marks? Or white stuff?

I'd be rather worried if I found skidmarks anywhere else.

I would find it disgusting too.

Does it smell like cum from an other man?

I once had a girlfriend who was anal (and VERY good at keeping her panties spotlessly clean--and about the only color panties she wore was white (though she'd wear beige if she badly needed to buy clean undies, and white were out...which is fairly normal, since beige doesn't show under clothes)...anyway, even with her, I'd occasionally find a skid mark in the back of one of her panties. Not what either of us preferred to see...but normal...

I think it may just be period stains. My dried blood is brown.

Psychological warfare is whats needed here

Make her do the washing so that she can see your skidmarks instead, then she might connect that to your situation and feel embarassed enough to change her ways. It will at least plant the seed in her mind and she will think about it.

Lick them

send her round here i will wash her pantys by hand also i will lick her arse clean after every shit

Im pretty sure its normal. If she changes her underwear at least every 2 days. It should be fiiine. Like
Sure i see. Good hygiene = good health = appealing. But u know dose white stripes. They are also normal. And something girls cant stop. Like periods. Which are btw worse. U dont wanna see red stripes. U want her to put those pads der in time. But its normal. Just like sweating.

ask her politely to wipe better.

Shit happens. Literally.

My girlfriend is very clean and hygienic, my seventeen year old sister is not, i find it repulsive and disgusting seeing her dirty panties lying around in her bathroom.

Normal, be happy!

If you do the laundry it's only natural she has the racing stripes!

Oh my God! Your girlfriend produces feces! She's a freak, and you must dump her at once!

Seriously, I get it. Iffy personal hygiene is never sexy or appealing, and it's even worse when you know you're getting up close and person with the less than dewy-fresh areas.

It's a very difficult issue to deal with sensitively.

Maybe you could start buying moist toilet tissue and see if that makes a difference?