12B Clean
At 12B Clean, we don’t shy away from anything—and I mean absolutely anything—when it comes to cleaning. Our three divisions are staffed by intelligent and highly trained people who know exactly what is expected of them.
Are you bothered by stubborn, unpleasant odors in your home or business? With our ozone treatment, we can eliminate odors very effectively and permanently. The molecular process involved in ozone treatment ensures odor-free air. This makes everything smell nice and fresh again.
Duringozone treatment, an ozone generator is used to convert oxygen (O₂) into ozone. This is a very effective way to eliminate stubborn odors. The result of this treatment is a wonderfully fresh home. Unlike air fresheners, this method permanently eliminates odors.

Using our high-end generators, we have already performed many ozone treatments in Leiden. As a result, Leiden smells a bit fresher again. Below are a few examples of situations in which our experts have successfully used ozone treatment in Leiden and the surrounding area.
Removing nicotine odors in preparation for selling or buying a home.
Removing the smell of a corpse. When a corpse has been in a home and potentially harmful odors need to be eliminated.
It eliminates other unpleasant odors, such as the smell of urine (for example, from animals) and the smell of smoke after a fire.
It is an effective way to combat bacteria.
We use this treatment to clean spaces such as offices, hotel rooms, and (stationary) RVs.

Safety is our top priority during treatment. We will provide you with instructions to ensure this. For example, no one is allowed to enter the room during treatment.
First, we adjust the room to the optimal temperature. We block off exhaust vents and seal any gaps. We also take fire alarms into account.
The next step is to strategically place high-end equipment in the designated location(s). We check to make sure the area is empty and post "No Entry" signs.
After the ozone treatment, our expert returns to ventilate the room. He does this while wearing the appropriate personal protective equipment. He also uses an ozone meter to check the air quality. All of this is done to ensure the process is carried out safely.
Are there any unpleasant odors you’d like to have removed? Our specialists will be happy to tell you whether ozone treatment is the right solution for this. In some cases, (industrial) odor eliminators and enzymes that we use to tackle odors are a better solution. This is where our experience comes into play.
Would you like us to perform the ozone treatment for you? We’ll take care of it. We’re available throughout the Netherlands and can be on-site quickly. Give us a call, make an appointment, and we’ll be at your doorstep within a few days. If necessary, we can be there within 4 hours.

Please call one of our staff members if you have any questions or would like a quote.