Figure 1.

(a) Scratcher covered with window screen. (b) Scratcher covered with short-fiber carpet. (c) Scratcher covered with long-fiber carpet. (d) Scratcher covered with bubble wrap. (e) Raised scratcher covered with window screen. (f) Raised scratcher covered with long-fiber carpet. (g) Tall post and (h) hemp post with mouse on top. (i–l) Cardboard scratchers: (i) long, (j) rectangular, (k) boat and (l) S-shaped. The (m) dried catnip plant or leaves, (n) catnip oil spray and (o) cat hair used. (p) The cat hair, evenly distributed on the S-shaped cardboard