Interior cleaning should lead when the dominant problem is debris, body oil, food, beverage, pet residue, smoke film, staining, moisture, or odor inside the cabin. The job owns dry capture, material testing, controlled chemistry, transfer, extraction where suitable, ventilation, and post-dry inspection.
A detailing kit should lead when the objective is a broader exterior or finish program involving paint decontamination, correction, glass, trim, wheels, or protection. A bundle may contain cabin products, but it cannot erase display, headliner, belt, airbag, sensor, grip, and hidden-foam limits. Each category therefore owns a different completion record.