Odours are difficult to measure as well to manage. As we see an increasing trend to more intensive livestock operations odours will become a larger issue that must be dealt with. The most effective way to control odour is to indentify the source and take corrective action to eliminate it. Odour sources can be divided into three categories: (1) building and facilities (2) Outside storage systems (3) land application. Sources of odours in and around buildings include: wet dirty floors and spilled, moldy feed to name a few. The solutions for building odours can be based on best management practices, keep the facilities clean. Management also plays a key role in the management of odour of lagoons: control the pH and cover whenever possible. Land application should include direct injection, as well taking into account prevailing winds on days of application. Producers must recognize, how ododur effects individuals is based on perception, therefore must develop a sensitivity and effective resposne to neighbours perceptions.