PLA is derived from renewable resources like cornstarch or sugarcane, making it a more sustainable option compared to petroleum-based plastics. Additionally, PLA is biodegradable under the right conditions, such as high heat and the presence of specific microorganisms. However, it is important to note that PLA's biodegradability doesn't mean it will break down quickly or completely in a home composting setup.

PETG, on the other hand, is derived from petroleum, which is a non-renewable resource. However, PETG has an advantage when it comes to recyclability. PETG can be recycled, and its recycling process is more established than that of PLA. This means that PETG products can be collected, processed, and turned into new products more efficiently than PLA.