What's the difference between ozone and enzyme odor treatment?

Enzyme treatment breaks down organic material at an identifiable source (pet accidents, food spills, mildew). Ozone neutralizes airborne odor molecules throughout the cabin, including diffuse smells that have permeated the HVAC and headliner.

Can a car be occupied during ozone treatment?

No -- the vehicle needs to be sealed and unoccupied during treatment given the respiratory risk at treatment concentrations, and it needs time to air out afterward before the customer drives it.

When does an odor job need both ozone and enzyme treatment?

When the odor has both an active organic source (needing enzyme treatment) and a diffuse smell that's already permeated the air and HVAC (needing ozone) -- common with significant pet accidents or long-term smoking history.

Interior Odor Removal: Ozone vs. Enzyme Treatment, What Actually Works

Ozone and enzyme treatments solve different kinds of car interior odor problems. Here's when each actually works, and when neither will fix the smell.