Left frozen bloodworms out overnight, can they still be used?

[thesawguy]

Received some freeze dried blood worms and black worms from Tom from St Louis. The puffer is nibbling on them but not chasing them down voraciously. She does prefer the blood worms over the black worms. I'm going to try and get her used to them though. This would be much easier than scraping off small chunks from the frozen cubes every day with a steak knife. Many thanks Tom!