It’s largely a matter of personal preference, but when a pair of socks starts to get discolored, lose its elastic, or develop holes or thin spots, it’s probably time to throw it away.
They can explode and harm workers. They can also leech out chemicals into groundwater and soil. If they're put in the recycle bin, they can explode and endanger workers when...
You should just throw away as it's honestly of no use after, unless you plan on making another batch. But even then I'd bite that minuscule cost and use another...
Yes, you can. You might consider portioning the spinach for future smoothies as you put it in the freezer (like in multiple plastic bags) so that it's easier to take...