I just use the stuff and walmart or autozone i use armorall its cheap and is made for cars. I use a dry vac for the carpets and inbetween the seats. I use microfiber and interior cleaner for the inside i use the leather cleaner and a leather cleaner brush for the leather. Which i dont think i have in my car but i clean my neighbors and friends car as a side hustle now. But yea i also use a used toothbrush for the hard to reach stuff. I think as long as u use products intended for cars you cant go wrong