Two types of canine struvite uroliths have been recognized: infection-induc
ed struvite is the most common type; sterile struvite is uncommonly recogni
zed. Infection-induced struvite is most commonly associated with urease-pro
ducing staphylococcal UTI. For dogs that qualify, medical dissolution is an
effective method of treatment. Medical dissolution protocols encompass: (1
) eradication or control of UTI; (2) use of calculolytic diets; and (3) adm
inistration of urease inhibitors to patients with persistent UTI caused by
urease-producing microbes.