Which method is ineffective for long-term odor removal?

Masking the odor with fragrances is considered ineffective for long-term odor removal because it does not address the underlying source of the odor. Instead of eliminating the odor-causing agents, masking simply covers them up with a pleasant scent. This might provide a temporary solution, but the original odor will eventually resurface once the fragrance dissipates or if the source of the odor remains.

In contrast, cleaning the affected area, using odor neutralizers, and removing contaminated materials actively work to eliminate the cause of the odor. Cleaning involves physically removing contaminants from surfaces, while odor neutralizers interact with odor molecules to neutralize their effects. Removing contaminated materials ensures that the source of the odor is completely eradicated, preventing it from re-emerging in the future. Therefore, relying solely on masking with fragrances does not provide a sustainable solution for odor control.