"We went from one to six cats, and through old age and illness are down to four. HOWEVER, no matter the number, someone always gets up on the wrong side of the basket, or lap, or bed, or whatever, with cats it doesn't matter. But we finally got the better of our furry felons by using vet recommended plug-in Feliway. Eureka! They adore the stuff, and if they do, we do. We don't know what they smell, but it soothes their sniffers. It's bliss to sleep without running to break up fights, or hearing a body hurtling against a glass door to challenge an outdoor intruder (yes, they're all indoor cats). Our cats' hierarchy changes, but the Feliway stays the same: wonderful, indispensable, calming. Those little boxes of plug-in Feliway refills are a balm of saniity for the whole family--our cats and us, their servants. Believe us and accept no substitutes (or the Feliway Spray)--it's Plug-in Feliway ONLY, everyday and all the way!"