What critical factor must be understood when addressing animal urine odor?

Understanding the degree of penetration is crucial when addressing animal urine odor because it directly influences the efficacy of odor removal methods. Urine can soak deep into multiple layers of carpet, padding, and even subflooring, making it more challenging to eliminate the odor completely. If the urine has penetrated deeply, simply cleaning the surface may not be sufficient, as the odor-causing compounds can remain trapped in the material, continuing to emit unpleasant smells.

Addressing only superficial contamination without recognizing how deep the urine has penetrated can lead to recurrent odor issues. This emphasis on degree of penetration ensures that technicians can choose appropriate cleaning methods and products that effectively reach and neutralize the odor at all levels.