Generally speaking, gas grills with rotisserie systems are safe to use if used with care. That said, natural gas grills must be connected to your home’s gas line, making them a little more dangerous than propane grills, which use refillable tanks. A small number of gas grills feature non-stick cooking surfaces that in the past may have had potentially toxic chemicals in their makeup- however at this point, not only are nonstick Teflon-like grilling surfaces rare in such grills, they’re also generally certified BPA-safe when present. This means they’re not made using chemicals that in the past have been proven to have links with cancer after long-term use. BPA-free certification usually appears in product descriptions, but it’s often the case even if it’s not advertised. If you’re concerned, due diligence with research is recommended on specific products. Cast iron grilling surfaces, of course, are naturally BPA-free and their burners deliver high-quality results.