As our homes have become more energy efficient, we have seen an unwanted consequence of our efforts to use less energy and promote cleaner air; as the air outside has gotten cleaner the air inside our homes and offices has declined in quality. Compared to 30 years ago, we are now seeing higher levels of pollutants inside our homes than ever before. Click here to view a graph of Indoor Level Air vs. Outdoor Level Air on Pesticide Concentrations.