Despite having used the lab ray many times, I have never zapped a pet with treasure items still in place. I know that pets, their minions and your inventory are targets for the lab ray, but I keep wondering if items in the treasure chest are target-able as well?
I have one pet that I have been wanting to zap for awhile, but I want to be lazy and not empty all the treasures he has into my vault. Thanks in advance to any and all fellow zappers who respond!
Nope, they are not zappable, and are safe from the zapper.

Thank you so much ! You saved me about an hour's worth of work, emptying and making note of pet treasures! :)