There’s plastic everywhere we go, and for the most part, there is no need to worry in terms of their safety when used. However, if we are talking about the toys and gears used by children, we must take due prudence in looking into the toxicity of this material. Here are few types of plastic that have been found to be dangerous: PVC or polyvinyl chloride. The manufacture of this type of plastic produces dioxin, which is a serious carcinogen. While dioxin is a manufacturing byproduct, and not.