Duration varies by format: room sprays — may last up to about 6 hours in the air; electric diffusers — often run on cycles or list an approximate runtime (e.g., around 8 hours per session); plug-in refills — commonly advertise multi‑week lifespans, often about 45–50 days on a low setting; laundry scent boosters/additives — can leave scent on clothes for days up to about a week.
In-wash scent beads: toss directly into the washer drum. Liquid additives or odor removers: add to the fabric softener compartment or add during the rinse cycle. Instructions commonly warn not to mix additives with detergent in the main wash and note that some products are intended for rinse‑cycle use only.
Manufacturers state expected run time in days and usually qualify it by the device setting. Common claims are around 45 days per refill, with some listings noting up to about 50 days when used on a low setting.
Look for language that emphasizes odor removal at the source, for example: “FIGHTS ODORS,” “Doesn’t mask,” “neutralize,” or claims such as “neutralize 100+ odors.” These phrases signal neutralization rather than simple masking.
Common descriptors include “fresh‑off‑the‑clothesline” and “clean linen.” Typical notes listed are pear and lily, cotton blossom, rose water, and musk. Floral or woody accents often include lavender and sandalwood (including “milky sandalwood”), and some blends mention warm spice notes such as sweet cardamom.
