What is the best product or home made mixture, for getting stains out of car upholstery?

I have a leased car and in February I need to give it back to the Toyota Dealership, if its any constellation its a Toyota Highlander. But I have stains that my siblings got on the interior such as coffee, ketchup, soda, and other mixed assortments of liquids. I have tried two products thus far and no luck, I would like to think that there is a miracle cure somewhere out there but I just don’t want to spend hundreds of dollars that may not even work. So does anyone have a product they used and worked amazingly or perhaps a home made mixture of chemicals that also worked?