On the low setting, a single refill lasts about 45 days of continuous use (24/7). On the high setting, it lasts roughly 20–25 days. Boost mode uses more oil and is intended for short bursts.Can I use Air Wick Essential Mist in a large room?

It’s best suited for rooms up to 500 square feet. In larger spaces, you may need more than one device or use the high setting consistently. For open-plan areas, consider placing it near major odor sources.

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