How long does the scent actually last?

You'll get strong scent for the first couple weeks, then it gradually fades over the following weeks. Once it's gone, it's time to swap in a fresh one. Exact longevity depends on cabin airflow and temperature—hotter cars burn through scent faster.

Can I hang this anywhere, or just the mirror?

The loop works with any standard rearview mirror. You can also clip it to an air vent with an aftermarket vent clip if you prefer—just make sure the clip won't interfere with vent adjustment or visibility.

Will this affect visibility or distract while driving?

Paper fresheners are thin and minimal. Hung properly from the mirror, they sit low and to the side. Position it so it doesn't block your sightline through the windshield.