Can you wash dry clean only polyester succesfully?

Posted under black futon

Our futon cover is plain solid black polyester, but says dry clean only on it. My kids got into the cupboard while I was on the toilet and smooshed peanut butter on it, and I just want it clean, now, so I can put it back on the couch! It’s just the cover, so I was thinking it should be okay in the washing machine…

yeah wash on cold gentle with gentle soap. and dont dry it will be fine. i never dry clean anything too expennsive!