Planning a long trip westward. And stay in my coach for a year while doing business in California. My wife has allergies, and the coach seems to trigger them. Any idea or company that could do a deep cleaning? She sees the brown line on the roof, no leak of any kind, and says there is mold in the coach. I spray the line with flex, and they disappear. Of course, I do not have any reaction to the issue of the coach and would love to have her on my journey.