Removing pet odor from an apartment or house – why airing out isn’t enough and ozone treatment can be effective

Intense dog or cat odor doesn’t settle only in the room air, but also in upholstery, carpets, curtains, grout, and walls. Anyone who wants to remove pet odor from an apartment therefore has to treat the cause. Ventilation and fragrance sprays only provide fresher air for a short time at best—they are not a permanent solution.

Why does airing out not permanently eliminate pet odors?

When airing out, only stale indoor air is exchanged for fresh outdoor air. The actual sources of the odor, however, remain in the room. Skin oil, saliva, hair, urine, or other organic residues gradually penetrate deep into textile surfaces and porous materials. As soon as it gets warm or humid, the odor can become noticeable again.

Room sprays and scented candles also help only to a limited extent because they do not remove the pet odor, but merely mask it. This is especially true if you want to remove strong dog odor from the apartment or eliminate cat urine smell. For reliable odor neutralization in the apartment, it must first be checked where the contamination comes from and which materials are affected.

The longer the residues remain in the materials, the more strongly the odor can become embedded. That is why not only the indoor air should be improved, but the actual source of the odor should be treated in a targeted way.

First clean, then neutralize pet odor

Where residues are visible or suspected, a thorough cleaning is essential. Floors, baseboards, sleeping areas, carpets, and upholstered furniture should be checked systematically. Urine stains must be treated in such a way that not only the surface appears clean, but also organic residues are removed from deeper layers. You can learn more in the guide “How do you effectively remove urine stains?”.

On sofas and armchairs, pet hair, dander, and sebum also collect in the fabric. Even after regular vacuuming, this mixture can cause a typical pet smell. See also: “How do you effectively remove hair and odors?”. Only once the contaminated surfaces have been deeply cleaned can the remaining pet odor be reliably neutralized.

Especially with older odor traces, surface cleaning is often not enough. If urine, saliva, or skin oil have already seeped deep into upholstery, carpets, or grout, the cleaning should be specifically combined with a professional odor neutralization. 

When is an ozone treatment for pet odor useful?

If the odor persists despite cleaning or affects several rooms, a professional ozone treatment can be useful. During ozone odor removal, the gas spreads throughout the room and also reaches cracks, textiles, and hard-to-access areas. It reacts with odor-causing organic compounds instead of merely masking them. This means even stubborn odors can be removed permanently.

The treatment is especially useful after moving out, before a new rental, or after pets have been kept in enclosed spaces for a long time. If the odor has already settled into curtains, carpets, upholstery, or wall surfaces, spot cleaning is often no longer sufficient. In such cases, ozonation can supplement the previously cleaned areas and neutralize remaining odor molecules even in hard-to-reach places.

An ozone device for odors should, however, not be used uncontrollably in occupied rooms. No people, pets, or plants may be in the property during the treatment. Afterward, the rooms must be properly ventilated. Further information can be found on the page about apartment ozonation. The costs depend, among other things, on room size, odor intensity, and cleaning effort — our price list provides initial details.