We have 9 cats ranging in years from 2-7. We have a mix of Males and Females. 2-3 boys are urinating and 1 female all over our house. We have tried everything from changing litter to adding more boxes. We use Feliway and put down tin foil. The problem jsut seems to be getting worse and worse. We have even had some of them checked for UTI. I heard of a drug to stop it, but am not sure about it. Can anyone help?