Catnip is an interesting one and some toys do not have very good or much nip in them.
I know of two excellent cat nip toys that Misa adores and Sasa loves but less than Misa and the birmans think they OK, all love my cat nip plants though.
I would watch the Purrs shop cos one of these catnip toys will be in stock shortly and if you rcats are gonna like catnip these will be the one
I not sure when they will be there but I am sure Tan will announce it. So just be patient.
Another thing is that catnip if its good also reacts well if made damo and it smells more highly.
During the summer I make a sucky sock for Sasa, old sock filled with fresh catnip leaves from the plant and she loves the green soggy mess she makes
I have been sent some other kind of catnip which may or not be valerian and will be trying it with my cats shortly, so will let you know how it goes.