Have you tried contacting the manufacturer? I'm sure many of us would like to know more about this problem! So sorry for you!

you may not have stains but just the actual seeds being visible--I have an antique quilt from my Grandmother and I worked like a dog one summer to try to remove those "stains" just to have a quilt appraiser tell me that natural cotton bat almost always has seed hulls that when the fabric is wet will be visible.

try some Dawn Dishwashing liquid, let it set about 10 minutes.,then gently hand wash out the Dawn.(it doesn't take much).What was the name of your batting? maybe contact the company that makes it and see what they suggest.

Are there lots of seeds and can they be removed through the back of the piece? Since it's a pillow, I wonder if you can work from the inside and get the seeds out. Little slits wouldn't be seen but would need to be repaired. If there are a lot, that might not be a solution for this though.

I Googled and found this website with some insight:
http://forum.apqs.com/topic/32452-oi...ow-to-get-out/

Regarding Grandma's Secret, I found that it does remove oil but that it is a 2-step process. After rubbing in the Grandma's Secret, it is necessary to wash with soap. A visiting guest had gotten grease on her new white sneakers at the airport, from a luggage carrier. My dh tried everything without success. I used a toothbrush to rub Grandma's Secret into the stains and let it rest for a few minutes. The stains were still there, but after I ran the sneakers through the washing machine with soap, everything was removed. My dh couldn't believe it! :D

The problem is that, even if you succeed in removing the existing stains, they may reappear because the seeds in the batting can continue to give off oil for a very long time.

Edit: Have you heard of cottonseed oil? That is the oil coming from the seeds in the batting. The following tips for removing oil from fabric may help:
https://www.reference.com/home-garde...e652c1f9f08de1
https://www.thriftyfun.com/Removing-...lothing-1.html

This is what I was wondering too. I'd contact the manufacturer.

Thank you Prism, I'm taking notes. Years ago, I worked for a company that manufactured cheerleading uniforms. The grease from the knitting machines would end up on the sweaters, but they had a fantastic product that you simply sprayed on, let dry, then blew off with compressed air. About 10 years ago, I discovered that Sullivan's made an identical product, it was fabulous for removing engine grease, butter, etc from my husband's clothes. Then they discontinued it. :( I'll have to try this Grandma's Secret product.