Great
Our two 14-year-old tomcats were marking and urinating all over the flat quite badly. Despite thorough examinations and giving Clamicalm for a longer period, nothing helped. We were at the point of giving both cats away. After a tip (too much sugar in Felix), we gradually replaced their wet food with RC Calm. For the past week, they've only been getting RC Calm, half the medication, and they've stayed dry :-) They're also much calmer and more affectionate. With no other option, they eat it.