I had the most unusual smell in a home I recently purchased in Fall and when the windows were no longer open the odor began to set in. I had no idea of how to approach this situation until a friend told me about Permanent Odor Removal in Allentown. I was skeptical but blown away when Robert told me he believed the previous owner may have had cats and he they may have sprayed in to the duct work. He came in with his crew and in less than 24 hours, the smell was gone. I am so happy that now that my home is sealed tight due to the freezing cold temps, I no longer have the smell! Thank you Robert for restoring my piece of mind!