about this project Multi-purpose O3 deodorant-refrigerator deodorant can effectively reduce the unpleasant smell in closed environments such as refrigerators, freezers, shoe cabinets, closets, wardrobes, cars, pet rooms, etc., and can also extend the shelf life of food and keep food fresh . Perfect Refrigerator Deodorant - As a refrigerator deodorizer, unlike baking soda and bamboo charcoal bags that only absorb odors, the ozone machine can quickly and effectively circulate active oxygen to all corners of the refrigerator. Instead of simply absorbing odors, it actively eliminates them. In just a few hours, you'll notice how clean your refrigerator smells. Economic Choice - No consumables, no filter changes, and reusable! The USB Rechargeable Refrigerator Odor Eliminator is fully automated and maintenance-free, saving you time and money! Stop wasting money on charcoal, baking soda, and deodorants you'll be throwing away in a few weeks. EASY TO OPERATE - This refrigerator odor remover comes complete and ready to use. With just one button, the refrigerator cleaner can operate in dual modes - standard mode (30-day battery life) and heavy-duty mode (72-hour battery life). Its built-in battery can last up to 30 days on a full charge. CONVENIENT & COMPACT SIZE - This portable deodorizer is lightweight and compact for home and travel. It only weighs 0.24lbs (110g) Dimensions: 12.6*35*34.6mm, which means it can be moved at any time, fits anywhere, and saves more space for your refrigerator and shoe cabinets.