Hi Bear,
I have not used this company, but they have been listed on this site for almost 2 years and I have never received any complaints. I would just recommend meeting with them and seeing if you feel comfortable with them. It you can't do that, build a relationship over the phone first. Any company needs to have your complete trust before they start or the process will be slow and painful. You can do it, but just make sure you do it the correct way, or you may never want to attempt this cleanup again. Best of luck to you!