Cats scratch door frames for reasons that have nothing to do with spite. The frame is tall, vertical, fixed and perfectly placed for a cat to stretch against at full length, and it carries the scent marks of every previous scratching session, inviting the next one. Owners often buy a scratcher, place it hopefully in a corner, and wonder why the frame still wins. The frame wins because it is in the right spot and built like a tree; your replacement has to match those qualities, sit in the same location, and pay off instantly, or the cat will politely ignore it and return to the wood she already trusts.
Put the Right Scratcher in the Exact Spot
Match the scratcher to how she scratches: a tall post for a cat who stretches upward, or a frame-mounted scratcher that wraps the corner she actually works. Height matters — she should be able to extend fully and pull downward without the post rocking, so choose a heavy base and check stability after each move. Material matters too: many cats prefer a coarse sisal rope surface for vertical scratching, while others choose cardboard, so offer the texture she already favours on the frame if you can tell which it is. Place the scratcher touching the frame at first, right over the scratched area, and only edge it sideways a little at a time once she uses it reliably.
Move the Habit Across
While the new surface proves itself, cover the exposed wood with a temporary protective film, smooth and unrewarding to claw, so the old target stops paying in texture and scent. When her claws first go into the post, reward her immediately — a treat at the post, a warm word, a short stroke — because a reward delivered minutes later teaches nothing about the scratching itself. Play with her beside the post too, dragging a toy up its surface so scratching becomes part of a game she chooses. Never punish scratching at the frame: a startled cat simply moves the habit to another doorway, or to your sofa, and the behaviour you wanted to remove has only relocated.
Mend the Frame Once the Habit Has Moved
Repair the wood only after the post has clearly won — a fortnight of her choosing it over the frame is a fair signal. Fill the grooves, sand them smooth, and repaint, because fresh paint also removes the layered scent marks that invited repeat scratching at that exact spot. If she tests the repaired frame once, do not despair — the contrast between plain repainted wood and a rewarding post usually re-teaches the lesson within days. Frames in other rooms she has never touched can wait; spend your effort where her habit actually lives.
Check Whether the Scratching Is a Request
Some frame-scratching is not territorial at all. If she scratches a particular door, pauses, looks at you, and waits, she may be asking to come through it — to reach a sleeping spot, a litter tray, or simply you. In that case, treat the door as the answer: open it for her when you can, or show her a proper route to the room she wants, so her request gets met by movement through the doorway instead of by claws on its frame. Keeping that door on a predictable open-or-closed pattern helps her learn when to expect it open. Family members you invite can view her profile via KinsLe Family Sharing, whether or not that doorway is one she is allowed through.