I got this cat scratcher several years ago, & it has seen me thru 6 cats. Being cardboard, it's getting a bit worn, but they all use it. I grow my own catnip, which is much stronger than what comes with the refill pads, but the point is to give them a target other than my furniture & rugs. This certainly helps.
I was able to put new scratcher refills into both my kitty's Cosmic Alpine Climb Scratcher and another brand of scratcher that was built similarly. I was not sure whether the refill would fit into the other brand of scratcher, but it did fit perfectly.