forgot to add 

summer of 2022 was the problem

Good Morning Peggyann,

Thank you for contacting the helpline with your question. If your containers have been covered in the garage for a over a year, then my guess is that you have disrupted the lifecycle of the tomato hornworm and should be ok. If you believe that the soil has been completely frozen in the containers for at least 48 hrs, then that should have killed any pupae in the soil. Also, by being covered with no host plant around, any adult moths that may have emerged would have moved to a food source if they were able to escape the covered container. I can't find any evidence that a pupae can survive for over a year in the soil as they typically emerge within 1-4 weeks depending on the weather. Here's a little more information on them and their lifecycle:

Tomato Hornworm

Fact Sheet

I hope this helps, please feel free to reach out anytime if you have more questions.