No factor30. I thought it was to do with the fact cats dont like water. I googled and saw this
Wanna hear a cool way the Japanese deal with this? They fill up Clear rectangular drink bottles with water and line them up where the cats pee. They said that the lights refracting from these bottles made the cats not want to go there. I saw tons of these water filled bottles in Kyoto so they must work!
The bottles should have as many angles as possible so the "ribbed" bottles work best. In Japan, I think water comes in this size and shape, but there must be some drink like this in your neck of the woods.