I would give this company zero stars if possible. They came out and gave us a bid, which was the lowest. When asked how could I tell the old mold from new mold, if it came back, after treatment I was assured the old mold will turn gray so you can tell the difference. Based on this answer we went with this company. When they showed up to do the work I again asked how could I tell the old mold from the new mold, if any grew back, so I could utilize their warranty. Again, I was told the mold would turn gray and be like a dust. Two days after the treatment the mold was still black and had not changed at all. I emailed the company and asked how long it was supposed to take to turn gray since I was told two days. No response. I wait five days after treatment, check the mold and it is still black, no change at all. Email again with no response. Nine days after treatment I call and get someone who says they will get a hold of someone in the Washington office to get back to me right away. That night I get an email from Brent about my air quality tests. It says everything looks great. No answer to my question about the dead mold changing colors. So I email Brent asking why it is not turning gray. He response was that it doesn't always turn a different color, it depends on the mold, which is not what I was told twice in person and why we went with this company. Brent said he would come out and do another test if I want him too. One, that is great but still how do I know it is really dead. Two, it's pretty hard to sell a house with black mold all over the attic and tell the new buyers its dead. Brent did say he would meet with any new owners. I don't think new home owners want another meeting when trying to buy a house and buy one that has visible mold, dead or alive, all over the attic. Three, it will be impossible to tell any new mold from old mold as it is all the same color and I had a lot, so the warranty is useless. I guess my choices now are when I get the new roof put on to have them rip off all the plywood and replace it or get it done again with a different company that kills the mold and covers up the dead mold so you can tell if any new mold grows back. Please, Please, please go with a different company. read more