VITESY Deo Odour Eliminator. Lasts 10 years & no refills required

Deo uses passive catalytic oxidation at room temperature: a ceramic catalytic filter breaks odour molecules down into carbon dioxide and water. It needs no power, no batteries and no refills, and adds no fragrance, so it reduces smells instead of covering them.

Vitesy lists the fridge, wardrobes and closets, shoe cabinets, the pantry, the cupboard under the sink, bins and the car. Use one per fridge or small cabinet and more in bigger or smellier spaces, with about 5 cm of free space around it.

In Vitesy's lab test in a sealed 60-litre box, fish odour (trimethylamine) and sulphur odour (methyl mercaptan) fell below the detection limit within 2 hours. At home, Vitesy says most people notice a difference within 72 hours. Deo can significantly reduce odours without always removing every trace.

Deo works best between 40% and 80% relative humidity. Very damp spaces or condensation can reduce its efficiency for a while, so dry the wardrobe or shoe cabinet first. Our guide to musty wardrobes explains how.

Vitesy estimates about 10 years of use from accelerated laboratory tests. There is nothing to recharge or replace. Wipe the outside with a slightly damp cloth and never rinse or submerge it.

Baking soda and charcoal absorb odour molecules until they fill up and need replacing. Air fresheners add a scent on top of the smell. Deo breaks odour molecules down catalytically, so it keeps working without refills.