Depending on what country you are in the answer to this may differ. It is best to check with your municipality. In Canada and the United States (we operate in North America) tattoo garbage is disposed of in the same landfill garbage system that regular household and commercial business garbage goes to. This means that if a product is contaminated by blood or other fluids that are considered biohazardous it is still being disposed of in a way that does not treat or separate the contaminated item. The advantage to using biodegradable and compostable products that end up in a landfill is simply that they will break down under those conditions instead of remaining a biohazard indefinitely.