## Common ground
All options are products designed to improve indoor air quality by releasing fragrance or neutralizing odors.
## Options at a glance
**3307.49 – Room & general use**
- **Defining trait:** Used for general room perfuming or deodorizing, not limited to specific locations.
- **Typical examples:** Gel, spray, plug-in, or hanging air fresheners for homes or offices.
- **Best fit when:** The product is used in any indoor space and doesn’t rely on electricity or special construction.
**3926.90 – Plastic/ acrylic bead auto fresheners**
- **Defining trait:** Made primarily of plastic or acrylic beads, typically hung in cars.
- **Typical examples:** Car air fresheners with colored beads that release scent over time.
- **Best fit when:** The product is a non-electric, bead-based freshener used mainly in vehicles.
**4911.99 – Printed air freshener cards**
- **Defining trait:** A printed card (e.g., paper or cardstock) with fragrance, often used in hospitality.
- **Typical examples:** Hotel room scent cards placed on desks or beds.
- **Best fit when:** The product is a flat, printed sheet or card that releases scent passively.
**6701.00 – Feather-based auto fresheners**
- **Defining trait:** Constructed essentially of feathers (e.g., decorative or natural materials).
- **Typical examples:** Car air fresheners made from feather clusters with scent sachets.
- **Best fit when:** The product uses feathers as the primary structural material.
**7616.99 – Aluminum aroma tubes**
- **Defining trait:** Cylindrical housing made of aluminum alloy, often refillable or long-lasting.
- **Typical examples:** Metal tube air fresheners with scent strips or cartridges.
- **Best fit when:** The product has a metal (aluminum) casing and is designed for sustained release.
**8424.89 – Automatic atomizing devices**
- **Defining trait:** Uses atomization to spray perfume oil into the air automatically.
- **Typical examples:** Battery-powered misting units that dispense fragrance at intervals.
- **Best fit when:** The product actively sprays or mists scent without manual input.
**8509.80 – Electric motor-driven devices (≤20 kg)**
- **Defining trait:** Uses an electric motor to rotate or disperse scent (e.g., fan-based).
- **Typical examples:** Electric diffusers with spinning fans or rotating wicks.
- **Best fit when:** The product relies on mechanical motion powered by electricity.
**8516.79 – Electric/thermic household fresheners**
- **Defining trait:** Uses electric heating or thermoelectric elements to vaporize scent.
- **Typical examples:** Plug-in wax warmers, heated diffusers.
- **Best fit when:** The product heats a solid or liquid fragrance to release it.
**8543.70 – Refrigerator-specific electric fresheners**
- **Defining trait:** Designed specifically for refrigerators, often with germ-reducing features.
- **Typical examples:** Plug-in fridge air purifiers that reduce odors and bacteria.
- **Best fit when:** The product is intended exclusively for use inside refrigerators.
## Key differences
| Option | Material | Power Source | Primary Use | Automation |
|-------|----------|--------------|-------------|------------|
| 3307.49 | Varies | None | General room | Manual |
| 3926.90 | Plastic/acrylic | None | Car | Manual |
| 4911.99 | Paper/card | None | Hotel rooms | Manual |
| 6701.00 | Feathers | None | Car | Manual |
| 7616.99 | Aluminum | None | General | Manual |
| 8424.89 | Varies | Electric | General | Automatic |
| 8509.80 | Varies | Electric | Household | Mechanical motion |
| 8516.79 | Varies | Electric | Household | Heating |
| 8543.70 | Varies | Electric | Refrigerator | Specialized |
## How to choose
- Is it used in a refrigerator? → 8543.70
- Does it use heat to release scent? → 8516.79
- Does it spray or mist automatically? → 8424.89
- Is it made of feathers or plastic beads? → 6701.00 / 3926.90
- Is it a printed card? → 4911.99
- Is it a metal tube? → 7616.99
- Does it use an electric motor for motion? → 8509.80
- Is it general-purpose and non-electric? → 3307.49
## Overlaps & pitfalls
- A car air freshener could fit both 3926.90 (beads) and 6701.00 (feathers), but material determines the correct code.
- Electric devices may overlap in function (e.g., 8509.80 vs. 8516.79), so power method (motor vs. heat) is key.
- If multiple traits apply, prioritize by **main function or defining feature**—e.g., if it heats scent, use 8516.79 even if it’s also electric