We have been asked to clean a 50ft long 10ft wide freezer which has been emptied of food but is very smelly. It apparently broke so all the contents (alot of meat products) obviously went off. This is a new area for us, the freezer doesn't store products for consumers, just for there own testing and trialling. I have been researching cleaning products etc on the web, any advice on what to use, how to approach the job and what will get rid of the smell. I know cleaners specialise in this area, should I be considering taking the job on? Your thoughts are greatly welcomed. (any price suggestions?)