Which hamster book did you get Hayley? Does the nesting material look a bit like cotton wool? If so please take it back and get the paper stuff - it may not look as soft and comfy to us but it is far safer for our hamsters. Fluffy bedding as it is unaffectionately known is a dangerous and lethal product - it can be ingested by the hamster causing internal blockages and creates threads which can amputate limbs - really nasty