Frozen kills all bacteria n parasites. Why you feed frozen. Im in the food industry any there is NO way I would thaw out meat for my dogs. Ive seen too many issues. It's not like in the wild wolves hunting their dinner. There's no humans involved. But that's me. I never had issues with frozen.
My morning routine is,, i start my tea water, get Hanks food out of freezer, pour my pot of tea, and pour some of the leftover water over his frozen food, and serve... he likes either way, but then i can stur it up better when i add his tumeric/pepper mix..