Quote Originally Posted by kitedemon View Post
The reason why the little hand warmers are not recommended is they heat fast and very hot and then cool the temp spikes like crazy. The longer ones as you discovered are slow to heat (20-30 min) and don't get as hot but stay warm longer. remember all the chemical packs use oxygen so air holes are needed.
Thanks. I used reptile ones and followed the instructions to a tee. Lots of air holes and I did a test run a few days before the move to make sure I had proper temps. We also checked the temps along the way. It was 12 hours of driving the first day and 2 the next. Everything went great and I didn't have to use my spare packs.

On another side note, neither one relieved themselves during the trip either which was awesome.

Thanks again. If I didn't find reptile heat packs I was just going to make sure the car temps were warmer.