I've been wearing my lavender wheat bag like a stole these last few months, I have intermittent neck pain - I'll get a sudden creaking noise like a tree, and a short sharp pain, then toothache in my neck/left shoulder for the rest of day. Last night, I overheated the bag in the microwave, I scorched it - amazing it has not happened before, the scorching - it smelled like a singed dog. I used it anyway, took it to bed and woke up surrounded by wheat kernels, scattered like confetti. The scorched bit had burst. I am sad. I love this wheat bag, is excellent for back and neck pain, though sometimes it does burn your skin if you're not careful. It feels like a pet has died. But time to get a new one.