I have one cat that is so stressed she has started to pull out her fur and hide in the litter box. I really can't tell that this product has helped any. She is still doing the same behaviors, despite the Feliway, and vet prescribed anti-anxiety meds. I really don't know what to do. My other cat has bouts of nighttime senility, where he roams the house meowing. The Feliway doesn't seem to have helped him either. I have been using it for a month now, and expected to see some change by now...