I purchased about two dozen crickets at a Petsmart last summer and on the three minute drive home they all appeared as if they had died! It was around 110F outside and my car had no a/c so the heat must have taken them out, but I wasn't expecting such sudden death lol. I decided to see if I could exchange them, but this time I brought a small cricket bin and placed the bin on top of an ice pack so that I can dump the new crickets into the bin to see if I can keep them alive that way. I also placed the bag of apparently dead crickets into the bin, which was a good idea because by the time I had arrived at the store they had all revived! Lol. Just a story I wanted to share:lol: If the crickets have wings or sticks on their backsides (called ovipositors) they are adults. If the bins are not well ventilated that could be a reason.