We evaluated the potential toxicity of two moldable plastic products sold on Amazon.com (JXE JXO and Instamorph pellets) by directly exposing zebrafish embryos to them. These products were selected because they were the most popular consumer moldable plastics included in our survey, and consumers mentioned using them for dental applications in their reviews. For clarity in the subsequent sections, the Instamorph and JXE JXO pellets will be referred to as consumergrade PCL and TPU, respectively.