Clever and Simple Design Idea [SEP] I don't know if this listing will last because it is (at the time of my order and review) a four pack for the price of a pair elsewhere. But you do indeed get four. So I thought I'd throw a review up.<br /><br />I really like the design behind these. You can mount them with screws on a flat surface or corner. And with the included double sided sticky 3M pads, you can do the same without making holes. Plus probably get them on a round pole like a leg of a piece of furniture. The plastic spikes are a good balance of stiff and flexible, though between the two descriptors I'd lean towards stiff. I mounted a couple on my big cat tree (one on a corner and one on the base flat). They obviously blend in fine there. But they're small enough that they would be discrete even if they were put somewhere more out in the open.  My cat likes them well enough. She isn't as enamored with them as I had hoped but I've caught her getting the side of her mouth on them more than once already.<br /><br />Between the cheap price and the non damaging sticky pad option, they're worth trying out if you think your cat would like them. If not, no big loss.