The US government recently spent 19 billion dollars on researching how to better detect bombs, at the end of this they concluded nothing beats a dog’s nose. How can this help you on a survey? At Enviro-Dogs we offer a dry rot detection dog service which are available for surveys around the UK. How does it work? The dogs work in the same way as a police search dog; they search purely for the odor or dry rot (Serpula lacrymans) in all its stages of growth.