The treatment may be used for the removal of cat urine from carpet padding, dog urine on subfloor, or pet odors that may have accumalated over time. OdorKlenz is simply injected below the surface and allowed to remain in place.This offers long-term odor maintenance to areas that had significant contamination.dorKlenzÂ® Subfloor Treatment Kit. Removing pet odors and urine odors from subfloor can be quite the challenge.