I have nothing but good things to say about SmogBuster Inc, we were working with a company, Imperial Oil, who was a little bit ignorant about the details of ventilation and the importance of quality filtration. SmogBuster pretty much helped us deal with all the concerns of our customer and really made sure we were in good hands. They provided us with an accurate budget, a hardworking crew, and great customer service throughout the whole process. We really had no issues or concerns during and after the job. I don't give 5/5 stars because there is always room to improve but SmogBuster is close to perfection. I would highly recommend their services.