“In my profession as a Poultry Specialist, I travel all around the world. During these customer visits I often get the question of how to clean the equipment inside the poultry house. Cleaning of these equipment in poultry houses is mostly done wet, and if I explain that cleaning from aviary or other multitier systems can be evenly well done dry, I often see questionable faces. Growing up with the broiler breeders and used to wet cleaning, I had the same question as most customers. But, twenty years ago, working with my first aviary system and experiencing dry cleaning for the first time changed my opinion. A multitier system can be cleaned as good as dry as wet, the disinfection is most important.”