We suggest leaving the wax in the container for breaking, with the lid on.  This keeps things much cleaner. Using a small hammer with firm taps words best.  The more wacks with hammer the smaller the pieces, so it's up to you how large or small you want them. 

Once broken you may keep the wax in the container, or store in another vessel for easy use. Some storage options are Large Zip bags, pail with lid, or any container that works for you.  The aluminum tray and lid are recyclable, so please dispose of accordingly.