give it a try !
well i opened it up and started to snap a piece off - my hands must have been very hot as the shatter would not shatter, it only stuck to my fingers. 1/4 gm wasted and fingers gooed up I stuck it in the freezer. It warmed to finger temperature and started to stick to anything , I just rolled it up in little balls and bang ! I got shattered and after a few more became tattered...highly recommended !!