Comment: Technician came to clean AC vents after dog was "skunked". He checked the air filter and determined that any odors would have been trapped there first, and were not detectable; as a result, he recommended against a full vent cleaning. He was right: once my dog was fully deskunked by the groomers and Dalworth had picked up all the carpets she had rubbed into for ckeaning, the odors went away. He saved me a lot of money on unnecessary cleaning so I could focus on the things that needed attention. Great expertise, can depend on their advice.