How can I encourage my cat to use the scratching post?

My cat constantly scratches the couch and I'm getting really bored of telling her off and trying to get her to stop. I've even tried putting the scratching post directly in front of the couch, changing her food (she's only been doing this for a week and a bit) and putting her on the scratching post the... show more My cat constantly scratches the couch and I'm getting really bored of telling her off and trying to get her to stop. I've even tried putting the scratching post directly in front of the couch, changing her food (she's only been doing this for a week and a bit) and putting her on the scratching post the second she starts scratching, but she doesn't get it. It's obvious she knows she's not supposed to do it, because the second I catch her, she runs away. Does anyone have a cat that does this and has any ideas on how to get her to stop and use the scratching post?
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