Can I soak my plastic plants and decor in baking soda and vinegar and water to remove diatoms or does only bleach and water work?
I'd run them through the dishwasher. I do that with some things.
But the bleach will work also if it is rinsed very well.
Vinegar and baking soda works as well.
Even just cleaning them with tap water and a toothbrush would work. Diatoms rub off very easily.