Prognosis
Castration stops or greatly reduces urine marking in 87 percent of intact males that spray. Generally, cats will cease spraying within two weeks after undergoing this procedure; however, improvement may not occur for up to six months in some cats. The use of medication such as Valium or Buspar along with environmental and behavioral controls results in a 75 percent reduction of spraying in most cats. Unfortunately, urine marking does tend to recur, despite the initial success of treatment. Continuous treatment with medication does not necessarily prevent recurrences and is not recommended due to the increased likelihood of side effects with prolonged usage.