"My cat started urinating on things like my couch, carpet, etc... for no apparent reason. I think it was because he doesn't like the dog. I took him to the vet to make sure he didn't have an urinary tract/bladder problems. That was not the case. The vet suggested getting a diffuser with Feliway in it. I got one for each floor of my house...... He is much calmer around the dog and most importantly, has stopped urinating in places other than the litter boxes. This product has saved me tons of money in replacing couch foam, carpet cleaning products that don't work, etc. I absoultely recommend it."