The best thing I did in the end was move from my beautiful, but old, dusty, moldy, Victorian house into a modern, air-conditioned town house. I also changed to nontoxic household cleaners, put dust mite covers on my bedding, eliminated a whole bunch of carpets and draperies, controlled the humidity, used central vacuuming, and installed a number of HEPA and negative Ion air cleaners which keeps the number of particulate in our indoor air down to a minute level. There was more that I did, but these are the highlights. On a scale of 1-10, I feel an 8.5 or better. If I didn't have 3 Siamese cats in the house, I believe I'd be 100ymptom free, but I am a cat nutcase.
Every allergy sufferer needs to make their own interventions into their health.
What each person needs to do is very individual. I consider the number of changes I needed to make minimal by comparison to some stories I hear. It was with great anticipation that we wrote off to a well respected catalog in the allergy field for a newly listed product for mold control. It was called Enviro-Pro which had a healthy ring to it. We presumed, and quite mistakenly it turned out later, that it was a safe and biodegradable product.