Pet stores are rarely going to give you proper advice, and more often than not, animals suffer in their care.
I trust the respected breeders at New England Reptile and VPI. You can't find better or more accurate information from people who have dedicated their lives to learning, understanding and breeding blood pythons.
It's always up to the keeper to stay on top of the most accurate and up to date advice. We can't force you to read anything, but I personally hope you don't listen to a pet store on snake husbandry.