As I recall the thing with catnip is regarding the dry leaves - they can inhale the dust and it gets into their respiratory system as an irritant. So, as in this case, they most likely use the liquid spray - since it is dry, it is fine. The same goes with the catnip toys - as long as the catnip is well encased, it is fine for them to play with. Dooks, Musky Dusty [Posted in FML 7247]