So I'm getting ready to ship out my pastel for a breeder loan tomorrow. This is my first package and I'm not sure how many hours the heat pack should be that I put in the box.

Its around 37 degrees low and 61 degrees high in NY and will be arriving in Utah where it is 39 degrees low and 52 degrees high.

Also where/how do you put it in the box. I've watched some videos and looked up some threads already but I want to get an idea of the different ways people do this and why.

I have all my supplies ready except for the heat packs.

Did anyone else battle paranoia like me with the first package shipped process?

Thank you!