Yes, bring us your holiday cooking oil. We'll gladly accept used cooking oil for responsible disposal.
Houston Biodiesel currently offers pump biodiesel at well below the price of diesel fuel. As such we're getting a lot of new biodiesel users. Welcome! You don't need to be a biodiesel expert to use it as a fuel. All you need to know is that you use it just like diesel fuel. Don't complicate it. Just fill up your tank and drive. No vehicle modifications required. No voided warranties.