Dr. Elsey's Cat Attract Litter Plug in to an outlet in any room for always-on help.
Feliway Plug-In Diffuser Refill, 48 mL, 6-Pack Cheapest refills. Count on using them for a few months.
Feliway Behavior Modifier Spray 75 ml Spray in areas where your cat sleeps and hangs out for boosted help.
Dr. Elsey's Cat Attract Problem Cat Training Litter, 40 pound bag Great for attracting cats to litter box.