thats a good link for TOYS which are commonly used while kids are unsupervised.

But if you have a kid thats chewing on fishing rods and you're worried about lead-based paint(?) on your kids rod:

what are the sinkers made of?
do they also have access to hooks and line?

there is a point at where parental-taught disciplne MUST be factored in. fishing equipment is not a toy; even fishing equipment sold in the "junior" size. :)