Little black worms in toilet?

I keep finding these tiny black worms in one of my toilet bowls. They're only maybe half an inch long, and from what I could find on Google, they may be drain flies. Think that's it? And how can I get rid of them? Google is telling me that if they're in drains, I can just use a plumbing snake to get... show more I keep finding these tiny black worms in one of my toilet bowls. They're only maybe half an inch long, and from what I could find on Google, they may be drain flies. Think that's it? And how can I get rid of them? Google is telling me that if they're in drains, I can just use a plumbing snake to get any gunk out and then pour drain cleaner down. Can I use that on a toilet, though? I don't do plumbing, so I wouldn't know.
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