Silicone is also dangerous-- when you are shopping, you have to call and ask about PTFE/PFOA/PFCs and Teflon (Teflon is just the brand). You also need to spell out the full chemical names (don't just say them-- spell: p as in paper, e as in elephant, etc...They are Polytetrafluoroethylene, Perfluorooctanoic acid (PFOA) AKA c8 , and perfluorinated compounds (PFC's). Give the names, abbreviations and any brands (like Teflon) and ask them to check all of them.
When you call, the sales person will almost always tell you some scripted junk about how their product is safe for humans and pets. They have no idea what they are talking about, so insist on knowing the chemical make-up of the coating/contents. They will likely transfer you to a line where they will then ask a bunch of the same questions and ask for the model number/serial etc...They will usually offer to call you back after making an inquiry, but never ever trust the first person who tells you their product is pet safe when they have no idea what it is made of.