Why smoke is the hardest one
Smoke residue coats everything, including surfaces you don't think about: the inside of the windshield, the vents, the headliner. That's why a car can smell fine at first and then smell like smoke as soon as the heat is turned on.
We clean the accessible surfaces properly and then treat. We'll be honest about how much we expect to remove in one visit rather than promising a perfect result up front.
