Marijuana growing has spurned the refined development of ozone based odor killing machines. They've been around for a while, but the technology and capacities have grown along with the growing crowd's needs. It works pretty good. I have a couple 'ozone tubes' I bought for use in used cars. The trick to odor eradication is to try to remove the offending material - turds, food, etc. THEN - use a bacteria killer whether it is ozone, detergent, UV sunlight (which DOES work great) or other deodorizer. The bacteria are what make the odors. If you put your cab in a closed room with an ozone machine, it will clear up pretty quick.