What Is Hydroxyl Generation in Odor Removal?

Hydroxyl radicals are molecules that exist naturally in the earth's atmosphere. They are created when ultraviolet light interacts with water vapor. These radicals are extremely unstable and seek to bond with other compounds. When introduced into a contaminated space, they aggressively oxidize odor molecules, breaking the chemical bonds that create the smell.

This process does not mask the odor with a perfume. Instead, it changes the chemical structure of the volatile organic compounds, or VOCs, that cause the stench. The contaminants are converted into harmless, non-odorous byproducts like carbon dioxide and water vapor. This makes it effective for deeply embedded biological or chemical smells from sewage, smoke, or long-term dampness.

This technology tackles odors that standard cleaning cannot reach. It penetulates porous materials like drywall, insulation, and wood framing. After a flood, water soaks into these materials, leading to microbial growth and a persistent musty smell. Hydroxyl generators can address the odor at its source within the structure itself.

It is also used for fire and smoke damage, neutralizing the acidic smell left on surfaces. Other common applications include odors from deceased animals, sewage backups, and chemical spills. The process is particularly useful when the exact source of a smell is difficult to locate, as the treatment gas can fill an entire enclosed space.

• Musty mold and mildew odors from chronic dampness
• Persistent smoke smells embedded in fabrics and walls
• Biological odors from sewage, animal waste, or decomposition
• Chemical odors from paints, cleaners, or industrial products
• Food spoilage smells that have permeated cabinets
• General stale odors in enclosed spaces like cars or closets

While considered safer for occupied spaces than ozone, hydroxyl treatment still requires caution. The machines produce ultraviolet light and should be operated by trained individuals. Sensitive materials, like certain plastics or artwork, may need protection. People, pets, and plants are usually removed from the immediate treatment area as a standard safety precaution.

Hydroxyl generation is not a substitute for physical removal of contaminated materials. If insulation, carpet, or drywall is soaked and moldy, it must be removed. The treatment works on airborne and surface odors but cannot restore structurally unsound items. Its success depends entirely on first eliminating the source of moisture and contamination.

• Requires trained operation of specialized equipment
• Not a substitute for removing physically contaminated materials
• Some sensitive items may need to be protected or removed
• Occupants and pets should vacate the treatment area
• Effectiveness depends on prior drying and cleaning
• Policies vary, and your insurer decides what is covered.