Ran a mobile detailing operation for a while now and the question I get most is "why steam instead of the shampoo/extraction combo everyone else uses?"

Honest breakdown:

Steam wins on: fabric seats, door panels, dash trim, cup holders, air vents. High heat kills bacteria and lifts grime out of stitching without soaking the foam underneath — no 6-hour dry time, no mildew risk, no chemical residue for anyone with allergies or kids/pets in the car.

Shampoo still wins on: heavily set-in stains (think old coffee spills, deep carpet soiling) where you genuinely need surfactant + agitation + extraction to pull the stain out rather than just sanitise it.

What we actually do: steam clean 90% of the interior, then spot-treat the worst carpet/mat stains with a small amount of extraction before a final steam pass to rinse it out. Best of both, minimal chemical exposure, car's dry and usable same day.

If you're comparing quotes and a detailer says "steam only, no exceptions" — ask what they do with deep-set stains. If the answer is "nothing, steam handles it" they're probably not being straight with you.

Happy to answer questions if anyone's deciding between mobile detailers.