the 2 bad ones I had burned too fast. I'm not sure what the problem was but I could watch the contents disappear with each toke. After 7-8 puffs, it was all gone.
I prefer ingesting b/c it's longer and more intense high for me. I vape with the carts to kill the time I wait for the ingestion (green dragon, distillates, or brownies) to kick in or when I want to catch a quick buzz