Clippers get the job done for a day — but the second they're put away, there's still no way for your cat to keep her own claws in check in between.
Nail caps cover the tip for a few weeks, but they don't file anything underneath — and once they fall off, the claw is exactly as sharp as before.
Vet trims work well in the moment, but between visits, the same overgrowth simply picks back up.
A plain scratching post sheds the outer claw sheath, which helps a little — but it doesn't actually file the tip. The claw underneath stays just as sharp.