TECHNOLOGY FOCUS - ENVIRONMENT - Preferred Method: The method preferably controls odors under both aerobic and anaerobic conditions. Preferred Microorganism: The Pseudomonas sp. is a mixture of Pseudomonas putida PPU 9.0 and Pseudomonas fluorescens PFL 2.1 deposited at the Northern Regional Research Laboratory as NRRL-B-30044 and NRRL-21658, respectively. The isolates of Pseudomonas sp. assimilate ammonia, degrade skatole and reduce chemical oxygen demand (COD).Preferred Composition: The composition preferably comprises at least 1x106 colony forming units of the Pseudomonas sp., as well as sodium (alkali metal). The monoammonium is preferably included in a weight ratio between 1:1 and 125:1, alkali metal to ammonium nitrate. The compositions are also stable for long periods at room temperature prior to use for controlling odor production from the waste. EXAMPLE - A culture consisting of HPLC (high performance liquid chromatography) grade sterile water containing 10 g of chicken manure was inoculated with a bacterial composition. The composition comprised a 1:1 ratio of Pseudomonas putida PPU 9.0 and Pseudomonas fluorescens PFL 2.1 at 1x10000000 colony forming units (CFU)/ml. A culture without the bacterial composition served as a control. A first experiment consisted of the inoculated culture and the control, which were incubated without shaking (anaerobic conditions), and a second experiment consisted of the inoculated culture and the control, which were incubated with shaking to provide aeration. Ammonia and COD (chemical oxygen demand) were measured in ppm (parts per million) and odor strength was evaluated by use of an olfactory scale ranging from 0 to +5, where 0 is no detectable odor and +5 is very strong odor. The results showed that after 48 hours with aeration, the bacterial composition was effective in reducing odor from very strong (+5) to slightly detectable (+1). In addition, ammonia was reduced 87% and COD was reduced 80%. In the control with aeration, ammonia was not reduced although COD was reduced 88%, and the olfactory level was +3. For the anaerobic condition, the composition had an olfactory scale value of +3, while the control had +4.