I found this article on how to get stains out of plastic. https://foodal.com/knowledge/cleaning/11-ways-remove-stains-plastic/ She warns at the end that once tomato sauce has been cooked in a microwave, it essentially bakes into the plastic, so I hope one of these suggestions works for you.
That's certainly been my experience - tomato stains forever. I learned that on a small Rubbermaid box, and since then, I've always reached for glass or ceramic. A good reminder to us all, I suppose. ;o)
5 Comments
She warns at the end that once tomato sauce has been cooked in a microwave, it essentially bakes into the plastic, so I hope one of these suggestions works for you.