Four bacterial isolates (classified as species of Pseudomonas but not further characterized) from poultry house deep-litter droppings and nearby soil, used uric acid aerobically as a sole C, N, and energy source. Organisms harvested from media containing uric acid can degrade uric acid completely with the formation of CO2 and NH3. Allantoin, allantoic, glyoxylic and formic acids are completely oxidized.