See I’ve been submerging them in the super hot water for about 15 minutes and then feeding. My smaller bp has no troubles(probably cause he’s just having small mice) and my bigger snake is on rat pups. Maybe they heat levels I’m getting in them just aren’t up to scratch. I’ll focus on getting a warmer head
Why use hot water which washes away the natural odour of the mouse /rat ??
Best to warm the rodent head up with a hairdryer plugged in next to the viv
Remember to feed evenings .. in very low / dim light