there is a product by Jarrow called Heavy Metal Detox that binds all heavy metals and carries them out of body without chelating minerals from the body.
it could possibly help your children. It helped me and I continue to take it to counteract the trails they spray in our cities. my blood turned up clear from heavy metals after taking triple the recommended maintenance dose for 2-3 months. thats good time. good luck and blessings. I'd put everyone on it.