They sprayed for the mold in my basement and then used a negative air/suction machine to keep the dust down. They also grounded the front part of my cement block in my basement. They also painted over all of the cement wall on the inside parameter of the house. They told me the color it would be ahead of time. They did warn me that they wouldn't let anyone in the house, and that there could be fumes and sounds from the work so I could alert me neighbors. They did a really good job. Everyone was very polite and business like. They seemed to be very clean. They were able to work around my things and were very careful.