Catnip induces playful behavior in cats when eaten or smelled, somewhat what alcohol or weed does to humans. However, unlike alcohol or drugs, catnip is a completely natural product and is harmless for cats.
Catnip also has a sedative or calming effect on cats. Kind of like a high for cats.
Manufactured from Nepeta cataria, a plant. Catnip can be added to items you cats come in regular contact like regular toys or scratching toys as well.
Use it once or twice, not regularly as it may cause dependency.