Try blue ointment. Ya get it at your pharmicists. When you ask for it try and see the look on the pharmicists face. Blue ointment contains mercury and forms an amalgum with lead and should facilitate the Cerosafes removal.
Blue ointment is also for killing body critters.
hnter
PS: Mercury is known to cause insanity. use caution handling the ointment and amalgum. Wear rubber gloves and use baggys for the waste. Keep it safe.