I purchased a used car in January and didn’t realize until it got really warm that the former owner was a smoker (I am not). The heat really brought out the cigarette smell and I could barely stand to get into my car. I used almost an entire bottle of Fbreeze but that really only masked the odor. Then I tried Devour Plus – I put a spray trigger on the bottle, sprayed the entire inside, headliner to carpeting – that’s all I did. I closed the car and let it sit overnight. The difference the next morning was amazing. It’s now been about a week, I only sprayed the one time and even my husband who is very sensitive to the smell of stale smoke can’t believe that there is no trace of the smell in my car.