Typically, if you find someone is lying or manipulating repeatedly, you jump to stricter outcomes. If you ban a specific substance in cookware and they just create a slightly different, untested, one... If they promise that waste won't escape the facility because there are safe ways to handle it, yet it continues to happen...
It's like having a child that continually pushes the limits of the rules and repeatedly causes trouble. At some point you must realize they are lying and will hurt themselves or others. You can't play with that ball responsibly? Guess what, it's gone.