I'm sorry to have to disagree with the other advice here, Amaelamin, but I'm afraid you and they are simply wrong. As I've pointed out here more than once before, there is NO SUCH THING as an indoor domestic cat. No matter what your home environment, virtually every cat that breathes not only wants, but actually needs to be allowed outside liberally during both the day and the night, to explore his/her territory, pick up scents, find a cosy, private nook in which to nap, and generally live its cat life to the full. Contrary to popular misguided belief, most domestic cats are also perfectly capable of holding their own very confidently against dogs, foxes, squirrels, other cats, and every other variable that the natural world can throw at them, including very poor weather - though outside time should be much more limited in sub-zero temperatures, of course. I will also reiterate - your failure to allow your cat outdoors will cause not only this very distressing and difficult "wetting" problem, (this is a PROTEST issue) but in time a whole range of other psychological disorders, becoming stronger and more pronounced almost by the day, and quickly degenerating into noisy, messy boredom, destructive, vicious psychosis, and then eventually, after much unhappiness, a final resigned dopiness, coma and slow death from a broken spirit... I am NOT exaggerating. If you love your cat, and want to see it happy, then PLEASE allow it out of doors for lengthy spells every single day, and the proof this is the right step will be that the wetting problem will miraculously disappear overnight - happy cats are VERY clean and fastidious animals, and this behaviour proves a degree of severe emotional disturbance already. Please allow it outdoors, and trust its own natural outdoors instinct, rather than your indoors one..!!