How long does one can last?

Gel fresheners typically last several weeks to a couple months depending on how much your car is driven and whether you prefer strong or subtle scent. Keep the lid sealed when not in use to extend life.

Can I use this on my dashboard or does it need to hang?

Gel cans work best on flat surfaces like dashboards or cup holders where they sit upright. Some people clip them to vents, but flat placement gives you better control over fragrance intensity.

Will this leave residue or stains on my interior?

Gel formula is designed to stay contained in the can. Keep the lid tight and avoid placing it on soft upholstery or suede trim where liquid spills could occur during hard stops or rough roads.