Re: can frozen bloodworms spoil if left out? I would throw them out, not worth the risk. Mine doesn't eat a full cube daily so I keep them refrigerated and have used for up to 2 days after unthawing.

How long do bloodworms last?

Live bloodworms aren't always as easy to find as frozen ones. They also don't keep as long as the frozen or freeze dried varieties. The larvae life cycle is short, usually just 10-12 days, and they should be used within 2 or 3 days of buying them. Live worms usually come in a plastic container.

How long are bloodworms good for in the fridge?

Works great for two weeks.