I accidentally found a solution. I had a stained plastic bowl that I put an oxyclean solution in to clean something else. It made the stained bowl nice and clean. So, you might try oxyclean and soak for a good long while.
In a quart size bowl, you place about 1/4 cup of sugar (why sugar? don't know), a few squirts of dawn, a little water and vigorously shake the bowl. Now, as I watched this video, what looked like spaghetti stain, disappeared before my eyes. I haven't tried it yet, but maybe you'd like to.
Every time I clean my mirrors, they end up having tons of streaks and almost look worse than before I started. What could I use to clean them that won't leave streaks...
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I accidentally found a solution. I had a stained plastic bowl that I put an oxyclean solution in to clean something else. It made the stained bowl nice and clean. So, you might try oxyclean and soak for a good long while.
Vinegar, Here's a link for you:
https://www.thekitchn.com/2-ways-to-get-food-stains-out-of-plastic-containers-247058
A dab of white toothpaste on a damp cloth and a toothbrush.
My son sent me a video yesterday.
In a quart size bowl, you place about 1/4 cup of sugar (why sugar? don't know), a few squirts of dawn, a little water and vigorously shake the bowl. Now, as I watched this video, what looked like spaghetti stain, disappeared before my eyes. I haven't tried it yet, but maybe you'd like to.
Good luck!
Try baby sterilising tablets or liquid.leave overnight it works a treat on stained cups or bowls